centre-bit

n tool for boring holes in wood 三叉钻头; 中心钻.

centimetre, centipede, CENTO (also Cento), central, central bank, central heating, central nervous system, central processor, central reservation, Central Standard Time, centralism, centralization, centralization, -isation, centralize, centralized, centrally, centre, centre (US center), centre of gravity, centre spread, centre-fold, centre-forward (also centre), centre-half, centre-piece, centreboard, centrifugal, centrifugal force, centrifuge, centripetal, centrism, centrist, centurion, century, ceramic, ceramics, cereal, cerebellum, cerebral, cerebral haemorrhage, cerebral palsy,