There is a bad person in any group.

plural of rotameter

An electromechanical device that converts the angular position or motion of a shaft or axle into an analog or digital code.

plural of rotary encoder

plural of rotten egg

(slang, idiomatic, humorous, childish) A person who is the latest, the last, or the slowest in a group at performing a certain task, especially at going to a certain place.

plural of rotary dial

plural of rotacism

plural of rotary printing press

plural of rotary evaporator