[U.S.]. wall &c (inclosure) 232; fort &c (defense) 717. anchor, kedge; grapnel, grappling iron; sheet anchor, killick^; mainstay; support &c 215; cheek &c 706; ballast. jury mast; vent-peg; safety valve, blow-off valve; safety lamp; lightning rod, lightning conductor; safety belt, airbag, seat belt; antilock brakes, antiskid tires, snow tires.