Synonyms for Crevice:

n.

cavity, aperture, crater, blowhole, channel. open, cleavage. crack (noun)
division, slit, cut, cranny, rift, fissure, cleft, chink, abyss, gap, split, chasm.
crevice (noun)
cranny, chap, scissure, cleft, fissure.
fissure (noun)
division.
gap (noun)
breach, gulf, abyss, cleft, rift, chasm, interval, ravine, break, space, notch, slit, gap.
notch (noun)
jog, indent, chink, nick, score, gash, cut, serration, split, indentation, incision.
opening (noun)
chink.

Other synonyms:

cleavage. channel. Other relevant words:
blowhole, cleavage, aperture, chap, fissure, channel, cranny, division, cavity, scissure, crater, open, chink.

Usage examples for crevice

  1. The man was stretched out in a chair, sideways to the crevice in the wall, sleeping. – 'Firebrand' Trevison by Charles Alden Seltzer
  2. In a few minutes we heard rushing paws underneath us, then a rabbit shot up straight into the air from the crevice at our feet and set off for a wall that was a few feet away. – The Aran Islands by John M. Synge