pup
noun
[ pʌp ]
• a young dog.
pup
verb
• (of bitches and certain other female animals) give birth to young.
• "our Doberman just pupped"
Origin:
late 16th century (in the sense ‘arrogant young man’): back-formation from puppy, interpreted as a diminutive.
in pup
• (of a female dog) pregnant.
• "a bitch in pup, due to whelp soon"