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general::
Phrase(s): put weight on some part of the body
to subject an injured body part, as a foot or knee, to the weight of standing, to test its strength. • My doctor told me I can put weight on my broken leg next week., Phrase(s): put weight on
Fig. to gain weight; to grow fat. • The doctor says I need to put some weight on. • I have to go on a diet because I’ve been putting on a little weight lately.
McGrawhill's American Idioms And Phrasal Verbs