Polis silahı buldu.

Because silahı has the accusative ending, which usually marks a definite or specific direct object.

• silah buldu = found a gun / found some weapon
• silahı buldu = found the gun / found the specific weapon

So in this sentence, silahı tells you the object is a particular gun or weapon already known from the context.

Turkish does not have articles like English the and a/an.

Instead, Turkish often shows definiteness in other ways:

• by context
• by word order
• by case marking, especially the accusative

That is why silahı can correspond to English the gun even though there is no separate word meaning the.

Buldu comes from the verb bulmak, meaning to find.

Breakdown:

• bul- = the verb stem, find
• -du = simple past tense

So buldu means found.

In the 3rd person singular, Turkish often has no extra personal ending after the tense marker, so buldu by itself can mean he found, she found, or it found, depending on context.

This is because of two common Turkish sound rules:

1. Vowel harmony
   The vowel in the suffix changes to match the previous vowel.
   The last vowel in bul- is u, so the past suffix uses u too: -du.

2. Consonant choice: d or t
   After a voiced sound like l, the suffix uses d, not t.

So:

• bul-
  • past = buldu

Because Turkish default word order is usually Subject – Object – Verb.

So:

• Polis = subject
• silahı = object
• buldu = verb

That gives:

• Polis silahı buldu.

This is the most neutral, standard order. Turkish can move words around for emphasis, but putting the verb last is the normal pattern learners should expect.

It can depend on context.

Polis can refer to:

• a police officer
• the police in a general or collective sense

Since Turkish has no articles, polis by itself does not tell you exactly whether English should use a, the, or sometimes just police.

So depending on context, this sentence could be understood as something like:

• The police officer found the gun
• The police found the gun

Context decides which English translation sounds best.

Because polis is the subject, and the subject of a normal Turkish sentence is usually in the basic form with no special ending.

But silahı is the direct object, and because it is definite/specific, it takes the accusative ending.

So the contrast is normal:

• polis = subject, no case ending here
• silahı = definite object, accusative ending

The Turkish ı is the dotless i, and it is not the same as English ee in see.

It is a vowel pronounced far back in the mouth, somewhat like a very short, relaxed vowel. English does not have an exact match, but learners often start with something like a very reduced vowel.

Roughly:

• silahı ≈ si-lah-uh, but with the last vowel pronounced farther back and without rounding the lips

So the final sound is not like English ee.

Yes, the form silahı can look similar to other Turkish forms, so learners sometimes get confused.

But in this sentence, the natural analysis is:

• silahı = silah
  • accusative
• meaning the gun / the weapon as the direct object

If you wanted his/her gun as a direct object, you would usually expect silahını, not silahı.

So here, silahı is best understood as the definite object: the gun.

Because silah is a general word meaning weapon, but in many contexts it can naturally be translated as gun.

So:

• literal broad meaning: weapon
• common context-based translation: gun

If the meaning shown to the learner is gun, that is probably because the context makes that the most natural English choice.