n. In anat, the mouth of the windpipe; the opening at the top of the larynx; the chink, cleft, or fissure between the vocal cords.n. The reed or tongue of certain ancient musical instruments.n. In ornithology, an old name of the greenshank; subsequently taken as the specific name of the same, Totanus glottis; made by Koch in 1816 the generic name of the same, Glottis chloropus.