What is another word for "notch"?

Roget's Thesaurus (1911) lists these synonyms for "notch": abra, absence, abysm, abyss, barranca, battlement, between, breach, breachy, break, caesura, canon, chap, chasm, chink, cleft, clove, crack, cranny, creek, crenate, crenated, crenelle, crenulate, crevasse, crevice, crimp, cut, defile, dent, dentate, dentated, denticulate, denticulated, depression, dike, dimple, embrasure, far, fissure.