Synonyms and Antonyms of gill
1 a narrow opening between hillsides or mountains that can be used for passage <a narrow gill in the Cumbrian Mountains of the Lake District> Synonyms col, couloir, defile, flume, gap, gill [British], gorge, gulch, gulf, kloof [South African], linn [chiefly Scottish], notch, pass, ravine, saddleRelated Words abyss, chasm, cirque, cleft, crevasse, crevice, cwm [chiefly British], fissure; combe (also coombe or coomb) [British], dale, dell, glen, hollow, shut-in, vale, valley; basin, floodplain, kettle; arroyo, barranca (also barranco), coulee, draw, gully (also gulley), gutter, nullah, trench, trough, wadi, wash [West]
2 a natural body of running water smaller than a river <a narrow but surprisingly deep gill runs the length of the rocky gorge> Synonyms beck [British], bourn (or bourne), brook, brooklet, burn [British], gill [British], rill, rivulet, run [chiefly Midland], runlet, runnel, streamletRelated Words arroyo, billabong [Australian], fresh, freshet, runoff; bayou, coulee, slough (also slew or slue), stream, wash; canal, channel, cut, cutoff, gut, kill, millrace, millstream, race, watercourse, waterway; affluent, branch, confluent, distributary, influent, tributary
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