[pack a punch] or [pack a wallop] {v. phr.}, {slang}
1. To be able to give a powerful blow; have a dangerous fist.
* /He packed a mean punch./
2. To have a violent effect; be powerful.
* /It was vodka, and it packed quite a wallop./
[pack off] {v.}, {informal} To send away; dismiss abruptly.
* /When an Englishman got in trouble long ago, his family would pack him off to Australia or some other distant land./
* /Jane couldn't really get started on her homework until she had packed ...
[pack one's bag] {v. phr.}
To leave a place out of anger, annoyance, or disagreement.
* /"This place is beginning to irritate me," she said to her friend. "I want to pack my bags and get out of here."/
[pack rat] {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 ...