/bʌmp; bʌmp/ v
1 [Ipr] ~ against/into sb/sth knock or strike sth with a dull-sounding blow; collide with sth 碰撞或敲击某物（发出低沉响声）; 与某物相撞
*In the dark I bumped into a chair. 我在黑暗中碰到了椅子.
* The car bumped against the kerb. 汽车撞上了路边石.
2 [Tn, Tn.pr] ~ sth (against/on sth) hit or knock sth (esp a part of the body) (against sth) （尤指身体的一部分）碰、撞某物
*bump one's head (on the ceiling) 自己的头碰着了（天花板）
* The driver bumped the kerb while reversing. 司机倒车时撞着了路边石. =>Usage at bang1 用法见bang1.
3 (phr v) bump along, down, etc move with a jolting action in the specified direction 颠簸而行
*The old bus bumped along the mountain road. 旧公共汽车沿着山路颠簸行驶. bump into sb (infml 口) meet sb by chance 碰见某人; 偶遇; 巧遇
*Guess who I bumped into today? 你猜我今天碰见谁了? bump sb off (sl 俚) kill or murder sb 杀死某人; 谋杀某人. bump sth up (infml 口) increase or raise sth 增加或提高某事物
*bump up prices, salaries, etc 提高物价、薪金等.

n
1 (dull sound of a) blow, knock or impact; collision （发出低沉响声的）撞击, 碰撞, 冲撞, 相撞
*The two children collided with a bump. 两个孩子砰的一声撞上了.
* The passengers felt a violent bump as the plane landed. 飞机着陆时, 乘客感到猛烈的冲撞.
2 swelling on the body, esp one caused by a blow; lump or bulge 肿胀, 肿块（尤指因碰撞所致）; 隆起; 凸起
*covered in bumps and bruises 遍布肿块和挫伤
* get a nasty bump on the head 头上起了一个大包.
3 uneven patch on a surface 物体表面上的隆起物
*a road with a lot of bumps in it 有一块块隆起的路.

adv
1 with a bump; suddenly 砰的一声; 突然地
*He fell off the ladder and landed bump on the ground. 他从梯子上砰的一声跌到地上.
2 (idm 习语) things that go bump in the night => thing.