Matkap menteşe deliğini genişletti.

It follows the very common Turkish pattern Subject + Object + Verb.

• Matkap = the subject
• menteşe deliğini = the direct object
• genişletti = the verb

So Turkish usually puts the verb at the end, unlike English.

Because Turkish is normally an SOV language: subject–object–verb.

So where English says:

• The drill widened the hinge hole

Turkish naturally says:

• The drill the hinge hole widened

That sounds strange in English, but it is normal in Turkish.

It is a noun phrase meaning the hinge hole.

More literally, it is built from:

• menteşe = hinge
• delik = hole

But Turkish combines them as a noun compound:

• menteşe deliği = hinge hole

Then that whole phrase gets the object marking, giving:

• menteşe deliğini

Because menteşe deliği is a noun compound, not a regular possession phrase.

• menteşe deliği = hinge hole, a hole for a hinge
• menteşenin deliği = the hinge’s hole, the hole belonging to the hinge

In technical or everyday naming, Turkish often uses the compound pattern:

• kapı kolu = door handle
• araba kapısı = car door
• menteşe deliği = hinge hole

So here menteşe deliği is the natural choice.

Because Turkish often softens final k to ğ when a vowel-initial suffix is added.

So:

• delik → deliği

This is a very common sound change. Similar patterns happen in many words.

The ğ here is usually not pronounced like a strong consonant. It mainly smooths the transition and may lengthen the vowel slightly.

That is the accusative ending used for a specific direct object.

The base compound is:

• menteşe deliği

Then, because it is the direct object of the verb, it takes the accusative:

• menteşe deliğini

The n is a buffer consonant that appears after this kind of possessive/compound ending.

So you can think of it roughly like this:

• deliği
  • -ni → deliğini

Not necessarily in the way English learners often expect.

In Turkish noun compounds, the ending on the second noun often looks like a 3rd person possessive ending, but in many cases it is just part of the standard compound structure.

So:

• menteşe deliği does not usually need to be understood as its hinge hole
• it is simply hinge hole

This is one of the most important things to get used to in Turkish noun compounds.

Because menteşe deliğini works as one noun phrase, and the case ending goes on the head noun, which is delik.

So:

• menteşe stays bare
• delik changes to deliğini

This is normal in Turkish compounds. The first noun usually does not take the case ending.

Because genişletti is the transitive verb form, meaning made something wider / widened something.

Compare:

• genişledi = it became wider
• genişletti = it widened something

In this sentence, the drill is acting on an object, the hinge hole, so Turkish uses the transitive form:

• genişletti

It is simple past (also called the definite past), third person singular.

Breakdown:

• genişlet- = widen, enlarge
• -ti = past tense

So genişletti means widened / enlarged.

The past suffix appears here as -ti because of normal Turkish sound rules:

• vowel harmony chooses the vowel
• after a voiceless consonant, d becomes t

Because Turkish does not have an article system like English a / the.

Instead, Turkish shows things like specificity in other ways. Here, one important clue is the accusative ending on the object:

• menteşe deliğini suggests a specific hinge hole

So even without a separate word for the, the sentence can still clearly mean the hinge hole.

Yes. Turkish, like English, can use tools or objects as grammatical subjects.

So Matkap ... genişletti is perfectly normal, especially in practical, technical, or descriptive language.

It works like English sentences such as:

• The drill enlarged the hole
• The key opened the door

Yes, Turkish word order is flexible, but the neutral order here is very natural:

• Matkap menteşe deliğini genişletti

Other orders are possible for emphasis, contrast, or style, but the final verb is still very common. For a learner, this sentence is a good example of standard, neutral Turkish word order.