verb
    
    perks; perked; perking
    
    compare 2perk
    
    perk up
    
    [phrasal verb] informal
    
    to become more lively or cheerful
    
    
    
    b perk (someone) up or perk up (someone) :to make (someone) more lively or cheerful
    
    
    
    perk (something) up or perk up (something) :to make (something) fresher or more appealing
    
    
    
    chiefly US
    
    a perk (ears) up or perk up (ears) of an animal :to lift (the ears) in a quick or alert way
    
    
    
    
    
    
    
    b of ears :to be lifted in a quick and alert way
    
    
    
    
    
    verb
    
    perks; perked; perking
    
    [no obj] chiefly US informal :percolate
    
    
    
    noun
    
    plural perks
    
    [count] something extra that someone receives in addition to regular pay for doing a job - usually plural
    
    
    
    a good thing that you have or get because of your situation - usually plural