noun

• (medicine) An envelope, or wrapping, of sheets used in hydropathic practice, called dry pack, wet pack, cold pack, etc., according to the method of treatment.
• (slang) A loose, lewd, or worthless person.
  "That stupid pack did nothing but stare at us throughout the whole project."
• (snooker, pool) A tight group of object balls in cue sports. Usually the reds in snooker.
• (rugby) The forwards in a rugby team (eight in Rugby Union, six in Rugby League) who with the opposing pack constitute the scrum.
  "The captain had to take a man out of the pack to replace the injured fullback."

verb

• (physical) To put or bring things together in a limited or confined space, especially for storage or transport.
  "to pack goods in a box;  to pack fish"
• (physical) To put or bring things together in a limited or confined space, especially for storage or transport.
  "to pack a trunk;  the play, or the audience, packs the theater"
• (physical) To put or bring things together in a limited or confined space, especially for storage or transport.
  "The doctor gave Kelly some sulfa pills and packed his arm in hot-water bags."
• (physical) To put or bring things together in a limited or confined space, especially for storage or transport.
  "to pack a joint;  to pack the piston of a steam engine;  pack someone's arm with ice."