contusion

n (medical 医) bruise 挫伤; 青肿.

contrition, contrivance, contrive, contrived, control, control tower, controllable, controlled, controller, controlling interest, controversial, controversialist, controversially, controversy, controvert, contumacious, contumaciously, contumacy, contumely, contuse, conundrum, conurbation, convalesce, convalescence, convalescent, convection, convector, convene, convener (also convenor), convenience, convenience food, convenient, conveniently, convent, convention, conventional, conventionality, conventionalize, conventionalize, -ise, conventionally,