プログレッシブ和英中辞典(第4版)の解説
こぶ【×瘤】
&fRoman1;〔皮膚の盛り上がり〕a lump, a bump；〔らくだの〕a hump；〔木の〕a knot
なぐられたら頭にこぶができた
I developed a bump [lump] on my head where I was hit.
机の角にぶつかって頭にこぶができた
I hit my head on a corner of the desk and developed [got] a bump there.
&fRoman2;
❶〔邪魔者〕
目の上のこぶ
a person who stands in one's way
❷〔子供〕
こぶ付きですからお役には立ちません
I'm not going to be (of) much help because I've got a child (with me) that I have to look after.