weaponyoudaoicibaDictYouDict
weapon: [OE] Weapon comes from a prehistoric Germanic *wǣpnam, a source it shares with German waffe, Dutch wapen, Swedish vapen, and Danish vaaben. But of the ancestry of the Germanic form nothing certain is known.
weapon (n.)youdaoicibaDictYouDict
Old English wæpen "instrument of fighting and defense, sword," also "penis," from Proto-Germanic *wæpnan (cognates: Old Saxon wapan, Old Norse vapn, Danish vaaben, Old Frisian wepin, Middle Dutch wapen, Old High German wafan, German Waffe "weapon"), from *webno-m, of unknown origin with no cognates outside Germanic.