公交车的英文是 "bus"。词汇“bus”的详细释义如下：
bus是什么意思
音标: 英 [bʌs] 美 [bʌs]
n. 公共汽车
[计] 总线; 汇流条; 母线
n. a vehicle carrying many passengers; used for public transport
n. a car that is old and unreliable
v. send or move around by bus
v. ride in a bus
公交车（Bus）是一种配备有固定路线和站点的机动车，用于公共运输服务，它能够同时搭载多名乘客。