ज़िप बंद है।

Roughly:

• ज़िप = zip
• बंद = something like bund or band with a soft dental d
• है = heh (not like English high, even though it is often transliterated as hai)

So the whole sentence is approximately zip bund heh.

That dot is called a nukta. It changes ज to ज़ so it sounds like z instead of j.

So:

• जिप would sound more like jip
• ज़िप sounds like zip

Hindi often uses nukta letters for sounds that came in through Persian, Arabic, English, and other languages.

It is a very common loanword from English. In everyday Hindi, people often say ज़िप for the zipper on clothes, bags, etc.

So even though the word came from English, it is completely normal in modern Hindi.

Literally, it is:

• ज़िप = zip / zipper
• बंद = closed / shut
• है = is

So the structure is basically zip closed is.

This is normal Hindi word order. The main state or description comes before है.

Here बंद is describing the state of the zip: closed or shut.

So in this sentence, बंद works like an adjective or state word, not like a full action verb by itself.

Compare:

• ज़िप बंद है। = The zip is closed.
• ज़िप बंद करो। = Close the zip.

In the second sentence, करो gives the action sense.

है is the present-tense form of to be: is.

So ज़िप बंद है means The zip is closed. Without है, the sentence would usually sound incomplete in normal standard Hindi.

Hindi often puts this is/are word at the end:

• दरवाज़ा खुला है। = The door is open.
• ज़िप बंद है। = The zip is closed.

Hindi does not normally use articles the way English does.

So ज़िप बंद है could mean:

• The zip is closed
• A zip is closed

In real life, context tells you which one is meant. In this sentence, English will usually translate it as The zip is closed.

In this sentence, बंद stays the same. It is an indeclinable adjective here, so it does not show masculine/feminine forms the way words like बड़ा / बड़ी do.

That means this sentence does not tell you the gender of ज़िप.

What may change is है / हैं if the subject is singular or plural:

• दरवाज़ा बंद है। = The door is closed.
• दरवाज़े बंद हैं। = The doors are closed.

You would use an imperative:

• ज़िप बंद करो। = Close the zip.
• ज़िप बंद कीजिए। = Close the zip. / Please close the zip.

So:

• ज़िप बंद है। = statement
• ज़िप बंद करो। = command

Just add नहीं before है:

• ज़िप बंद नहीं है। = The zip is not closed.

This is a very common Hindi pattern:

• दरवाज़ा खुला नहीं है।
• दुकान बंद नहीं है।
• ज़िप बंद नहीं है।