wall; barrier

crevice, crack, gap

all, entirety, the whole, everything

one division, one step, one part of something / one moment, one time / (theater, performing arts) one act, one scene

one slice or cut of something / (rare) a one-time sexual liaison, a one-night stand

once

wholly, entirely, completely, at all

all, entirety, the whole, everything

wholly, entirely, completely, at all

dense, without breaks or openings / meticulous, carefully done, scrupulous / (of relations among people) close, familiar, intimate