Tengo il bastoncino da trekking con la mano destra.

Tengo is the first-person singular form of tenere, meaning to hold or to keep.

In Italian, the subject pronoun is often left out because the verb ending already shows who is doing the action:

• tengo = I hold
• tieni = you hold
• tiene = he/she holds

So Tengo il bastoncino... naturally means I hold the trekking pole...
You could say Io tengo..., but io is usually added only for emphasis or contrast.

Tengo comes from tenere.

It is a common irregular verb, so you should learn its forms rather than expecting it to follow a fully regular pattern.

Some useful present-tense forms are:

• io tengo = I hold
• tu tieni = you hold
• lui/lei tiene = he/she holds
• noi teniamo = we hold
• voi tenete = you all hold
• loro tengono = they hold

So in this sentence, tengo is simply I hold.

Bastoncino literally means little stick or pole. In this context, bastoncino da trekking means a trekking pole or hiking pole.

Breakdown:

• il = the
• bastoncino = small stick / pole
• da trekking = for trekking / trekking

The structure noun + da + activity/use is very common in Italian:

• scarpe da tennis = tennis shoes
• occhiali da sole = sunglasses
• spazzolino da denti = toothbrush

So bastoncino da trekking is literally pole for trekking.

Il is the masculine singular definite article, meaning the.

It is used because bastoncino is:

• singular
• masculine
• beginning with a consonant that takes il

So:

• il bastoncino = the pole

If it were plural, it would become:

• i bastoncini = the poles

Italian usually uses the definite article with body parts, where English often uses a possessive.

So Italian says:

• con la mano destra = with the right hand

rather than something literally like with my right hand.

This is very common:

• Mi lavo le mani = I wash my hands
• Ho male alla testa = My head hurts / I have a headache
• Alza il braccio = Raise your arm

So la mano destra is the normal Italian way to express the right hand, even though in English we often say my right hand.

Because mano is an important exception.

Even though it ends in -o, mano is feminine:

• la mano = the hand
• le mani = the hands

That is why the sentence says:

• con la mano destra

and not con il mano destro.

Also, the adjective must agree with mano, so you get:

• destra and not destro

Because adjectives in Italian must agree with the noun they describe in gender and number.

Here, the noun is mano, which is feminine singular, so the adjective must also be feminine singular:

• la mano destra = the right hand

Compare:

• il piede destro = the right foot
• la gamba destra = the right leg
• le mani destre = the right hands

So destra agrees with mano.

Here con means with.

So:

• con la mano destra = with the right hand

This is a very natural choice when you want to express the instrument or body part used to do something.

In many cases, Italian can also use other structures depending on nuance, but con la mano destra is straightforward and idiomatic.

Yes, but the meaning changes.

• con la mano destra = using the right hand
• nella mano destra = in the right hand

So:

• Tengo il bastoncino da trekking con la mano destra means I am holding the trekking pole using my right hand
• Ho il bastoncino da trekking nella mano destra means I have the trekking pole in my right hand

Both are possible, but they focus on slightly different things:

• con emphasizes the hand as the means used
• nella emphasizes location

Yes, the word order is natural.

The sentence follows a common pattern:

• Tengo = verb
• il bastoncino da trekking = direct object
• con la mano destra = additional phrase

Italian word order is often flexible, but not all versions sound equally natural.

For example, these are possible:

• Tengo il bastoncino da trekking con la mano destra.
• Con la mano destra tengo il bastoncino da trekking.
  This puts more emphasis on with the right hand.

The original version is a neutral, normal way to say it.

Yes. Tenere is a very common verb with several meanings depending on context.

It can mean:

• to hold
• to keep
• to have on / maintain
• sometimes to consider important in certain expressions

Examples:

• Tengo il libro in mano. = I’m holding the book.
• Tengo le chiavi in tasca. = I keep the keys in my pocket.
• Tiene molto alla famiglia. = He cares a lot about family.

In your sentence, the meaning is clearly hold.

There are other possibilities.

Bastoncino da trekking is clear and understandable, but depending on context, people might also say:

• bastone da trekking
• bastoncino da montagna in some cases
• simply bastoncino if the context is obvious

In everyday speech, the exact word may vary a little by region or speaker, but bastoncino da trekking is perfectly valid and easy to understand.

You would make mano plural and change the article and adjective accordingly:

• Tengo il bastoncino da trekking con le mani. = I hold the trekking pole with my hands.
• Tengo il bastoncino da trekking con entrambe le mani. = I hold the trekking pole with both hands.

Notice:

• la mano → le mani
• destra would not be used unless you specifically wanted to mention right-hand side information

So if both hands are involved, con entrambe le mani is especially natural.