Glue \Glue\ (gl[=u]), n. [F. glu, L. glus, akin to gluten, from gluere to draw together. Cf. {Gluten}.] A hard brittle brownish gelatin, obtained by boiling to a jelly the skins, hoofs, etc., of animals. When gently heated with water, it becomes viscid and tenaceous, and is used as a cement for uniting substances. The name is also given to other adhesive or viscous substances. [1913 Webster] {Bee glue}. See under {Bee}. {Fish glue}, a strong kind of glue obtained from fish skins and bladders; isinglass. {Glue plant} (Bot.), a fucoid seaweed ({Gloiopeltis tenax}). {Liquid glue}, a fluid preparation of glue and acetic acid or alcohol. {Marine glue}, a solution of caoutchouc in naphtha, with shellac, used in shipbuilding. [1913 Webster]