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1.
u should know that ill means tight and for na na think of the last two letters of vagina.
Foxy Brown has the Ill na na.
by Fuckyallhaters August 10, 2003
 
2.
badass vagina
damn, that milf had an ill nana
by justin July 01, 2003
 
3.
Ill means sweet or tight and na na mean poonntang...so it means sweet poontang
Do you see Shannen over there? I banged her, she got the ill na na.
by Kat August 22, 2003
 
4.
some bad azz wet killer tight azz puzzy
damm that girl had some ill nana
by nikki October 23, 2003
 
5.
god pussy...ill is good and nana is another name for vagina
foxybrown got a illnana
by bebo August 10, 2003
 
6.
Ill booty, sick booty, good pootang, yummy vagina
After enjoyable cunnilingus:

Nick: "DAMN! You got the Ill-Na-Na!"
by NickLover July 10, 2008
 
7.
the coolest
yo, you see that hoes tities
yeah, they were ill nanas
by the mac October 28, 2003