n. , informal A person who cannot part with old, useless objects; an avid collector of useless things; a junk hoarder. "Why are there so many things in this room?" John asked. "It is my brother's room, and he is a pack rat; he is unable to throw stuff away."
PACK RAT
Meaning of PACK RAT in English
American idioms English vocabulary. Английский словарь американских идиом. 2012