12-Letter Words Containing: I,R,N,E,R,S,_

• an instrument that indicates whether two periodic motions are synchronous (especially an instrument that enables a pilot to synchronize the propellers of a plane that has two or more engines)

• A person or thing that wins a prize.

• the fleshy part of the human body that you sit on

• the part of an animal that corresponds to the human buttocks

• increase the pressure on a gas or liquid

• maintain a certain pressure

• increase the pressure in or of

• a bottle opener that pulls corks

• move in a spiral or zigzag course

• a boisterous celebration; a merry festivity