puppy /ˈpʌpi/noun 7verb 1forms 3phrases 1 noun7 •a dog that is not yet fully grown •A young rat. •A young seal. •A dog with a youthful appearance, or any dog. •(informal) A (generic) thing; particularly something that is a nuisance; a sucker.I have another two dozen of these puppies to finish before I can go home. •[usually plural] (slang) A woman’s breast.Unclasp your bra and set those puppies free. — 2007 •(disapproving, old-fashioned) A conceited and impertinent person, especially a young man.I found my place taken by an ill-bred, awkward puppy with a money bag under each arm. — 1711 verb1 •To bring forth whelps or give birth to pups. formspuppied · puppying · puppies Phrases with puppy sick puppyA person who is sick (mentally disturbed) in a morbid or gruesome way.