to step on; to tread; to press down with the foot

to push off or pedal with the feet; to use the legs to propel something like a bicycle

to put on or wear clothing on the lower body, such as shoes, socks, or trousers

(slang) to dump or reject a romantic partner

(bound form) used in words like 蹭蹬 cèng​dèng meaning to suffer setbacks or to be in low spirits