10001 in NYC, e.g (3)

I believe the answer is:

zip

(Other definitions for zip that I've seen before include "Compress file for storage on disk < (or flash" , "Sound of bullet passing" , "Locking device with two toothed edges and a sliding tab" , "Nothing < close up" , "Fastening device" .)

I've seen this clue in The Washington Post.

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