Definition of "Better" :
noun: something superior in quality or condition or effect
"A change for the better."
noun: the superior one of two alternatives
"Chose the better of the two."
noun: a superior person having claim to precedence
"The common man has been kept in his place by his betters."
noun: someone who bets
verb: get better
verb: to make better
verb: surpass in excellence
"She bettered her own record."
adjective: (comparative and superlative of well') wiser or more advantageous and hence advisable
"It would be better to speak to him."
adjective: (comparative of good') superior to another (of the same class or set or kind) in excellence or quality or desirability or suitability; more highly skilled than another
"You're a better man than I am, Gunga Din."
adjective: (comparative of good') changed for the better in health or fitness
"Her health is better now."
adjective: more than half
"Argued for the better part of an hour."
adverb: comparative of well'; in a better or more excellent manner or more advantageously or attractively or to a greater degree etc.
"She had never sung better."
adverb: from a position of superiority or authority
"I know better.."