din Merriam Webster:
http://www.m-w.com/dictionary/packed Main Entry: 2pack
Function: verb
transitive verb
1 a : to make into a compact bundle b : to fill completely <fans packed the stadium> c : to fill with packing <pack a joint in a pipe> d : to load with a pack <pack a mule> e : to put in a protective container <goods packed for shipment>
2 a : to crowd together b : to increase the density of : COMPRESS
3 a : to cause or command to go without ceremony <packed him off to school> b : to bring to an end : GIVE UP -- used with up or in <might pack up the assignment> -- used especially in the phrase pack it in
4 : to gather into tight formation : make a pack of (as hounds)
5 : to cover or surround with a pack
6 a : to transport on foot or on the back of an animal <pack a canoe overland> b : to wear or carry as equipment <pack a gun> c : to be supplied or equipped with : POSSESS <a storm packing hurricane winds> d : to make or be capable of making (an impact) <a book that packs a man-sized punch -- C. J. Rolo>
intransitive verb