c.1300, "shaft of a spear," also "short stick, cudgel," from O.N.Fr. tronchon, O.Fr. tronchon (11c.) "a piece cut off, thick stick, stump," from V.L. *truncionem (nom. *truncio), from L. truncus (see
trunk). Meaning "staff as a symbol of office" is recorded from 1575; sense