I. (ˈ) rē+ transitive verb
Etymology: re- + gain
1. : to gain anew : get again : recover
regain health
regained his position in society
2. : to get back to : reach again
regain the shore
Synonyms: see recover
II. noun
1. : an act or instance of regaining
2. : an amount regained ; specifically : the percentage based on the bone-dry weight of materials of moisture that a textile material absorbs in a standard atmosphere