Wiktionary
vb. 1 (context idiomatic transitive English) to give up, to quit 2 (context idiomatic English) to include (especially of a large amount) 3 (context American football English) (rfdef lang=en topic=football, American)
Usage examples of "pack in".
Eventually I waited to see him pull into view, just to confirm that he was still coming, that he wasn't lying on the path palpitating or hadn't thrown down his pack in disgust and gone looking for Wes Wisson.
I could have told him about the time in Tennessee when Raina's munin nearly started a riot among Verne's pack in a sort of game of rape tag, with me as the rapee, but I didn't.
She didn't like how many new people Richard had allowed into the pack in such a short space of time.
His mat was iron-hard and the hellish chorus of the hyena pack in the forest echoed his sombre mood.
With tongs, Lucias set the pack in a slot in a treated glass tray.
You keep that ice pack in place until we get out of here and you may live to be hanged, yet.
Then, pack in hands, I found a comfortable seat for the consideration thereof.
Once he had been relieved of duty, Donal would join his pack in hiding, and wait for his successor on guard duty to nod off by the sleep draught, at which point he would be free to open the gate, and meet his expected escort.
Maledicta knocks a cigarette loose from the pack in front of her and lights it.