verb
    
    revs; revved; revving
    
    [+ obj] :to cause (an engine) to run more quickly :to increase the revolutions per minute of (a motor in a vehicle)
    
    
    
    
    
    rev up
    
    [phrasal verb] informal
    
    to become more active
    
    
    
    rev (someone or something) up or rev up (someone or something) :to make (someone or something) more active or effective
    
    
    
    
    
    noun
    
    plural revs
    
    [count] informal :a complete turn of an engine part :revolution
    
    usually plural