thorn
thorn \'tho.(*)rn\ \'tho.(*)rnd\ \'tho.(*)rn-l*s\ n [ME, fr. OE; akin to OHG dorn thorn, Skt trsub-dot>nsub-] often attrib dot>a grass, blade of grass 1: a woody plant bearing a sharp impeding process (as briers, prickles, or spines); esp : any of a genus (Crataegus) of the rose family 2a: a sharp rigid process on a plant; specif : a short, indurated, sharp-pointed, and leafless branch 2b: any of various sharp spinose structures on an animal 3: something that causes distress or irritation 4: the runic letter <thorn> used in Old English and Middle English for either of the sounds of Modern English th (as in thin, then) - thorned aj
Webster's English Dictionary