Pričekaj na peronu dok ne čuješ poruku na razglasu.

Pričekaj is the singular imperative of pričekati. It means something like wait a bit or wait until something happens.

A learner will often notice that Croatian has both čekaj and pričekaj:

• čekaj = wait / keep waiting (more general)
• pričekaj = wait for a while / wait until a specific point

In this sentence, pričekaj is very natural because the waiting has a clear endpoint: dok ne čuješ poruku na razglasu.

So the sense is not just wait, but more specifically wait there until you hear the announcement.

Croatian often omits subject pronouns because the verb ending already shows who the subject is.

Here:

• pričekaj = command to you (singular)
• čuješ = you hear

So Croatian does not need to say ti unless it wants emphasis or contrast.

For example:

• Pričekaj na peronu. = Wait on the platform.
• Ti pričekaj na peronu. = You wait on the platform.
  This sounds more emphatic, as if contrasting with someone else.

Because na can take different cases depending on meaning:

• na + accusative = movement onto/to something
• na + locative = location on/at something

Here the meaning is location: wait on the platform, not go onto the platform.

So:

• na peron = onto the platform
• na peronu = on the platform

The noun is peron and here it appears in the locative singular: peronu.

This is a very common question.

In Croatian, dok ne means until in sentences like this. The ne is normally required after dok when you mean until something happens.

So:

• dok ne čuješ poruku = until you hear the announcement

Even though ne is the usual negative word, here the whole meaning is not negative. It does not mean until you do not hear. It simply means until you hear.

This is a standard Croatian pattern:

• Čekaj dok ne dođem. = Wait until I come.
• Ostani ovdje dok ne završim. = Stay here until I finish.

Čuješ is the 2nd person singular present tense form of čuti.

So literally it means you hear.

In this sentence, though, English uses a future-like meaning after until:

• dok ne čuješ poruku = until you hear the announcement

That is normal. After time conjunctions such as dok, Croatian often uses the present tense where English also uses a present form, even though the event is in the future from the speaker’s point of view.

Because poruku is the accusative singular of poruka.

• poruka = nominative singular, the basic dictionary form
• poruku = accusative singular

Here poruku is the direct object of čuješ:

• čuješ poruku = you hear the message/announcement

So the case changes because the noun is receiving the action of the verb.

Razglas means a public-address system, loudspeaker system, or PA system.

So na razglasu means something like:

• over the PA system
• on the loudspeaker
• on the station announcement system

It is an idiomatic Croatian expression. Literally, it looks like on the PA system, but in natural English we would usually say over the PA system or over the loudspeaker.

Again, na is followed by the locative here because it refers to where the message is being broadcast: na razglasu.

Yes. Pričekaj is the singular imperative, used for one person.

If you want to address:

• one person informally: Pričekaj
• more than one person, or one person politely/formally: Pričekajte

So the polite/plural version is:

Pričekajte na peronu dok ne čujete poruku na razglasu.

Notice that both verbs change:

• pričekaj → pričekajte
• čuješ → čujete

Yes. Croatian word order is relatively flexible.

The original sentence is very natural:

Pričekaj na peronu dok ne čuješ poruku na razglasu.

But you could also say:

Dok ne čuješ poruku na razglasu, pričekaj na peronu.

The basic meaning stays the same. The difference is mostly one of focus or style:

• starting with Pričekaj... sounds like a direct instruction
• starting with Dok ne čuješ... puts more emphasis on the time condition

In everyday speech, the original version is probably the most straightforward.

Yes, peron commonly means a platform, especially in a railway or transport context.

So na peronu is exactly what you would expect for on the platform.

Depending on region or context, learners may also come across other transport-related words, but peron is a standard and very useful word to know for stations.