1. what
彼女のために何ができるだろう。What can I do for her?
2. you-know-what; that thing
3. whatsit; whachamacallit; what's-his-name; what's-her-name
Colloquialism
Usually written in kana
4. penis; (one's) thing; dick
esp. ナニ
5. (not) at all; (not) in the slightest
with neg. sentence
6. what?; huh?
indicates surprise
7. hey!; come on!
indicates anger or irritability
8. oh, no (it's fine); why (it's nothing); oh (certainly not)
used to dismiss someone's worries, concerns, etc.