What is the meaning of Ner?

An interjection generally used when gloating about a perceived cause of humiliation or inferiority for the person being addressed, often when disagreeing with a statement considered incorrect or irrelevant.

Contraction of einer (a, an).

man

form removed with the spelling reform of 2005; superseded by ned

Alternative form of ned

boar

black

genitive plural of nera

down; in a direction downwards

down; off

male

male camel

Source: wiktionary.org