pack on

1. (informal)To add (fat, muscle, etc.) so as to increase mass or bulk.

1. Tom had a pack on his back.

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2. I bought a six-pack of beer on my way home from work.

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3. Tom was carrying two suitcases and had a pack on his back.

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4. You should put an ice pack on your ankle to keep the swelling down.

   ruНужно приложить к щиколотке пакет со льдом, чтобы уменьшить отёк. — Karok

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5. He left a pack of cigarettes on the table.

   Він залишив пачку цигарок на столі. — deniko

   ruОн оставил на столе пачку сигарет. — odexed

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irregular

• pack upTo give in; to give up; to leave in defeat.
• pack offTo send away, with belongings, for a long time.
• pack outTo fill with spectators, passengers etc.
• pack onTo add (fat, muscle, etc.) so as to increase mass or bulk.
• pack inTo give up, to quit.
• pack awayTo store away, place out of the way, or stash, especially for the longer term.