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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Steps up a motor. 4 letters:

REVS: Steps up motor revolutions: Aviation slang.
REVS: Steps up the motor: Aviation slang.
REVS: Steps up a motor.
REV: Step up the motor
REV: Step up the RPM of plane motors.