niichan 

The suffix used in Japanese names when referring to "Big Brother." This is usually used in the family by the younger siblings but, can also be used by younger friends outside the family.

Katsuro-niichan

Domo Niichan (Thank you Big Brother)

niichan by Cole Daniel December 11, 2007

niiicholas 

a tumblr famous vintage/hipster blogger who's very attractive, but also very nice (which is rare). he has the cutest about me but no one can figure out his sexuality. that's alright though because he's hot.

-I need some great nature pictures for school!
-Just go on niiicholas's blog!

niiicholas by AnonymousfromTumblr November 5, 2011

niiche 

short for nitro. pronounced "nai-ch" but with a more longated "eye" sound

dude, that bong hit was niiche!
BRO! i just won 380 bux at a card game. reply: niiche!

niiche by DizzleBizucks September 13, 2010

Nisichenka 

1. Referring to or pertaining to a filthy old cunt that you really can't stand.
e.g. your Russian tutor

2. Referring to or pertaining to the act of shitting in said cunt's bathtub drain. Upon the completion of the defecatory act, ensure that no part of the shit is protruding outwards and the drain is completely sealed with the turd.

"Shit son, we gotta pull a nisichenka on that bitch."

"That bitch better quit sipping on the haterade or i'm gonna have to pull a nisichenka on her."

Nisichenka by Tron October 29, 2004

Niziah 

Niziah is a biblical name. Niziahs are lovely, beautiful, cute and easy to go people. They are lovely and supportive, they care for others. A perfect blend of cute and wierdness. But they can be aggressive if someone talks bad about their family.

Yar she's soo lovely i wonder .. i bet she's a Niziah

Niziah by Thewierdminded November 23, 2021

niichi 

intelligent

"u are such a niichi"

niichi by anonymous November 23, 2021