safety-pin

n pin like a brooch, with the point bent back towards the head and covered by a guard when closed 别针.

safari park, safari suit, safe, safe conduct, safe deposit (US ,safe deposit), safe house, safe seat, safeguard, safekeeping, safely, safety, safety curtain, safety glass, safety island (also `safety zone), safety lamp, safety match, safety net, safety razor, safety-belt, safety-catch, safety-valve, saffron, sag, saga, sagacious, sagaciously, sagacity, sage, sage-brush, sagely, Sagittarian, Sagittarius, sago, sahib, said, sail, sailboat, sailcloth, sailing, sailing ship,