nicheEnglishOxford English Thesaurusniche noun 1 in a niche in the wall is a statue of St John: recess, alcove, nook, cranny, slot, slit, hollow, bay, cavity, cubbyhole, pigeonhole, opening, aperture; Islam mihrab. 2 he feels he has found his niche in life: ideal position, calling, vocation, métier, place, function, job, slot, opportunity.niche Oxford Dictionary of English