Oyma vernikten önce temizlendi.

Here oyma is a noun, not a verb.

It comes from the verb oymak (to carve, to hollow out, to engrave), but in this sentence it functions as a noun meaning something like carving, carved piece, or engraved work, depending on context.

So in this sentence, oyma is the thing that was cleaned.

Because önce usually takes the ablative case in Turkish when it means before.

So:

• vernik = varnish
• vernikten = from varnish / before varnish in this structure
• vernikten önce = before the varnish / before varnishing

This is a very common pattern:

• yemekten önce = before the meal / before eating
• dersten önce = before class
• işten önce = before work

So -den / -dan is expected with önce in this kind of expression.

Because temizlendi is passive.

Breakdown:

• temizle- = to clean
• temizledi = he/she/it cleaned
• temizlendi = it was cleaned

The -n- / -l- passive structure here shows that the subject received the action rather than doing it.

So oyma temizlendi means the carving was cleaned, not the carving cleaned something.

It has a subject, but no stated agent.

• oyma is the grammatical subject of the sentence
• because the verb is passive, the person who did the cleaning is not mentioned

So the sentence does not say who cleaned it. It only tells us that the carving underwent the action.

This is very natural in Turkish, just as in English:

• The carving was cleaned before varnishing.

No need to mention by someone unless it matters.

It is in the simple past tense.

So temizlendi means was cleaned in the sense of a completed past action.

Structure:

• temizle- = clean
• passive marker
• -di = past tense

So the sentence describes something that happened and was completed in the past.

Literally, it is closer to before varnish.

But in context, Turkish often uses a noun like this to refer to a process or stage. So vernikten önce can naturally mean:

• before varnish
• before the varnish stage
• before varnishing
• before applying varnish

If you wanted to say before varnishing more explicitly, Turkish could also use forms like:

• verniklemeden önce
• vernik sürmeden önce

But vernikten önce is still perfectly natural if the context is about a finishing process.

Yes, Turkish word order is flexible.

This sentence uses a very normal order:

• Oyma = subject
• vernikten önce = time expression
• temizlendi = verb

Since Turkish usually puts the verb at the end, this is very standard.

You could also say:

• Vernikten önce oyma temizlendi.

That would still be grammatical, but it would place a little more focus on before varnish.

So the original order is natural and neutral.

Turkish does not have articles like the or a/an.

So oyma can mean:

• a carving
• the carving

Which one is meant depends on context.

In many real situations, if both speaker and listener know which carving is being discussed, English will use the, but Turkish simply leaves the noun without an article.

Yes.

Oyma has no case ending, so it is in the basic dictionary form, often called the nominative.

That makes sense because it is the grammatical subject of the passive sentence.

If it were a direct object in a different sentence, it might appear with another form depending on definiteness and structure.

Yes.

For example, if you wanted to mention the person doing the action, you could use an active sentence such as:

• Usta oymayı vernikten önce temizledi. = The craftsman cleaned the carving before varnishing.

Here:

• usta = the craftsman
• oymayı = the carving (object form)
• temizledi = cleaned

So the original sentence chooses the passive because the action done to the carving is more important than who did it.

A little, yes.

Because oyma can refer to:

• the act of carving
• a carved object
• carved decoration / carving work

Usually the context makes it clear.

In this sentence, because it is something that was cleaned before varnish, the most natural understanding is a carved object or carved section/surface, not the abstract action of carving.

So the grammar is clear, but the exact English noun may vary slightly depending on context:

• carving
• carved piece
• carved work
• engraved section