n. pl.   bis·cuits  1.  A small cake of shortened bread leavened with baking powder or soda. 2.  Chiefly British   a.  A thin, crisp cracker. b.  A cookie. 3.  A hard, dry cracker given to dogs as a treat or dietary supplement. 4.  A thin, often oblong, waferlike piece of wood, glued into slots to connect larger pieces of wood in a joint. 5.  A pale brown. 6. pl.   biscuit  Clay that has been fired once but not glazed. Also called  bisque2. [Middle English bisquit, from Old French biscuit, from Medieval Latin bis coctus : Latin bis, twice; see  dwo- in the Appendix of Indo-European roots + Latin coctus, past participle of coquere, to cook; see  pekw- in the Appendix of Indo-European roots.]  | 
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