Definify.com
Definition 2025
pack_on
pack on
English
Verb
to pack on (third-person singular simple present packs on, present participle packing on, simple past and past participle packed on)
-  (transitive) To add (fat, muscle, etc.) so as to increase mass or bulk.
-  2006, Joel Marion, Men's Fitness, Dec/Jan, p. 102:
- Most strength coaches agree that to gain an inch on your arms, you have to pack on at least 10 pounds of body mass.
 
 -  2010, Margaret Munro, "Dad's eating habits weigh heavily on offspring: study," Vancouver Sun, 21 Oct. (Canada) (retrieved 13 Nov 2010):
- The nine males packed on so much fat their weight increased to more than 700 grams.
 
 
 -  2006, Joel Marion, Men's Fitness, Dec/Jan, p. 102:
 
Usage notes
- Used especially in the contexts of health and bodybuilding.