n. a difficult problem. Syn. -- riddle, conundrum, enigma. [ WordNet 1.5 ]
n. 1. One who teases or vexes. [ 1913 Webster ]
2. (Zool.) A jager gull. [ Prov. Eng. ] [ 1913 Webster ]
3. (Elec.) A shunt winding on field magnets for maintaining their magnetism when the main circuit is open. [ Webster 1913 Suppl. ]