pack on

1. 1.

   gain (weight)

   “He packed on two pounds over the summer”

   Broadergain

Questions about pack on

What does pack on mean?

pack on means "gain (weight)".

Is pack on a common word?

pack on is banded "Uncommon" — turns up in careful writing rather than conversation. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.