Briar | { } n. [ OE. brere, brer, AS. brēr, brær; cf. Ir. briar prickle, thorn, brier, pin, Gael. preas bush, brier, W. prys, prysg. ] 1. A plant with a slender woody stem bearing stout prickles; especially, species of Rosa, Rubus, and Smilax. [ 1913 Webster ] 2. Fig.: Anything sharp or unpleasant to the feelings. [ 1913 Webster ] The thorns and briers of reproof. Cowper. [ 1913 Webster ] Brier root, the root of the southern Smilax laurifolia and Smilax Walteri; -- used for tobacco pipes. See also 2nd brier. -- Cat brier, Green brier, several species of Smilax (Smilax rotundifolia, etc.) -- Sweet brier (Rosa rubiginosa). See Sweetbrier. -- Yellow brier, the Rosa Eglantina. [ 1913 Webster ] Variants: Brier |