男: man; son / 難: difficulty

what

(dialectal, chiefly Kansai) Synonym of なの (na no)

何: how many; many

難問: difficult problem / 南門: south gate

これは何ですか: what is this?

阿南: Anan, Tokushima

come again? what did you say again? (asking the listener to repeat what was said) / what!? (expressing disbelief and shock)

Used with uncertain information. / no matter the circumstances

Used other than figuratively or idiomatically: see なん, でも.