nut
a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt
Type of:
block
Types:
hex nut
locknut; safety nut
square nut
stuffing nut; packing nut
wing nut; wing-nut; wing screw; butterfly nut; thumbnut
WordNet Lexical Database
v3.0, © 2006 Princeton University