rap·per /ˈræpɚ/
敲頂錘; 輕敲錘; 松模工具
Rap·per n.
1. One who, or that which, raps or knocks; specifically, the knocker of a door.
2. A forcible oath or lie. [Slang]
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rapper
n 1: someone who performs rap music
2: a device (usually metal and ornamental) attached by a hinge
to a door [syn: knocker, doorknocker]