adj Most; largest.
adj Most superior; most favorable.
adv To the most advantage; with the most success, cause, profit, benefit, or propriety.
n (uncountable) The supreme effort one can make, or has made.
n (uncountable) One's best behavior.
n (countable) The person (or persons; or thing or things) that is (are) most excellent.
v To surpass in skill or achievement.
v (transitive) To beat in a contest.
v (modal verb, colloquial) Had best.
n A surname.