1. 炮筒：guillotine cutter 切纸机 | gun barrel 炮筒 | gun barrel drill 炮筒钻

2. 油水分离罐：gun barrel salt water 沉降罐底的盐水 | gun barrel 油水分离罐 | gun block 枪体

3. 武器身管：爆炸喷涂:D-gun spraying | 武器身管:Gun Barrel | 射钉枪:nail-shotting gun

4. 炮管：舰炮:Navy Gun | 炮管:gun barrel | 炮闩:Gun crossbar

noun

1. a tube through which a bullet travels when a gun is fired

Synonym: barrel