Learn Turkish: Ses uykumu böler. - The sound interrupts my sleep.

böler is in the simple present tense (the Aorist), marked by the -er suffix. We use this tense for general facts or habits. This sentence means that noise generally interrupts your sleep, not that it is happening right at this moment. If a sound were waking you up right now, you would use the present continuous tense bölüyor.

What is the -u at the very end of uykumu?

It is the accusative case suffix. The base noun is uyku (sleep), and the -m makes it uykum (my sleep). Because your sleep is the specific thing being interrupted (the direct object of the verb), it requires the accusative ending -u, resulting in uykumu.

Does ses mean sound or voice?

It can mean both! Depending on the context, ses can translate to a person's voice, an audio track, or just a general noise. In this sentence, it simply refers to a general sound or noise.

Why does bölmek, which usually means to divide, translate to interrupt here?

In Turkish, you use bölmek (to divide or split) when talking about breaking up something continuous. Just like you can physically divide an object, you can conceptually divide someone's sleep or a conversation. Therefore, uykumu böler translates naturally to interrupts my sleep.