Quicksilver

kwik's tl-ver, n. the common name for fluid mercury, so called from its great mobility and its silver colour. Quia, kwid, u. something chewed or kept in the mouth, esp. a piece of tobacco. [A corr. of Cud Quiddity, kwid'i-ti, the e ence of anything any trifling nicety a cavil a captious question. [Low L. quLiditas—L quid, what.] Quidnunc, kwid'nungk, n one always on the lookout for news one who pretends to know all occurrences [L. What now