Senses
一番 double
Used after the verb 翻 to mean "to double" or "one fold"
一番 once
A measure word for an action that takes time and effort; one round; one time.
一番 a kind of
A measure word for states, scenes, or feelings, meaning "a kind of" or "a sort of".
一番 one silver coin
(archaic) Used to refer to a single foreign silver coin.