Definition of "gain"
gain1
/ɡeɪn/
verb
third-person singular simple present gains, present participle gaining, simple past and past participle gained
(transitive) To acquire possession of.
gain2
/ɡeɪn/
preposition
(obsolete) Against.
gain3
/ɡeɪn/
adverb
comparative more gain, superlative most gain
(dialectal) Suitably; conveniently; dexterously; moderately.