1.  crevice(n = noun.shape) chap, crack, cranny, fissure - a long narrow depression in a surface;
is a kind of depression, impression, imprint

2.  crevice(n = noun.object) cleft, crack, fissure, scissure - a long narrow opening;
is a kind of gap, opening
has particulars: chap, chink, crevasse, fatigue crack, break, fault, faulting, fracture, geological fault, shift, rift, slit, split, vent, volcano

   A narrow opening resulting from a split or crack or the separation of a junction; a cleft; a fissure; a rent. [1913 Webster]
"The mouse,
Behind the moldering wainscot, shrieked,
Or from the crevice peered about." [1913 Webster]

   To crack; to flaw. Sir H. Wotton. [1913 Webster]

crevice, n. a narrow opening or fissure, esp. in a rock or building etc.

Etymology:
ME f. OF crevace f. crever burst f. L crepare

N  interval, interspace, separation, break, gap, opening, hole, chasm, hiatus, caesura, interruption, interregnum, interstice, lacuna, cleft, mesh, crevice, chink, rime, creek, cranny, crack, chap, slit, fissure, scissure, rift, flaw, breach, rent, gash, cut, leak, dike, ha-ha, gorge, defile, ravine, canon, crevasse, abyss, abysm, gulf, inlet, frith, strait, gully, pass, furrow, abra, barranca, barranco, clove, gulch, notch, yawning gulf, hiatus maxime, hiatus valde deflendus, parenthesis, void, incompleteness, period, interim (time), with an interval, far between, breachy, rimose, rimulose, at intervals, longo intervallo.