From WordNet (r) 3.0 (2006):
zip
n 1: a quantity of no importance; "it looked like nothing I had
ever seen before"; "reduced to nil all the work we had
done"; "we racked up a pathetic goose egg"; "it was all for
naught"; "I didn't hear zilch about it" [syn: nothing,
nil, nix, nada, null, aught, cipher, cypher,
goose egg, naught, zero, zilch, zip, zippo]
2: a code of letters and digits added to a postal address to aid
in the sorting of mail [syn: ZIP code, ZIP, postcode,
postal code]
3: forceful exertion; "he plays tennis with great energy"; "he's
full of zip" [syn: energy, vigor, vigour, zip]
4: a fastener for locking together two toothed edges by means of
a sliding tab [syn: slide fastener, zip, zipper, zip
fastener]
v 1: close with a zipper; "Zip up your jacket--it's cold" [syn:
zip up, zipper, zip] [ant: unzip]
2: move very fast; "The runner zipped past us at breakneck
speed" [syn: travel rapidly, speed, hurry, zip]