What is the meaning of Bękart?

bastard (illegitimate child)

bastard (person who was born out of wedlock, and hence often considered an illegitimate descendant)

brat (child who is regarded as mischievous, unruly, spoiled, or selfish)

bastard (unintended result of actions)

widow (single line of type that ends a paragraph, carried over to the next page or column)

bastard, crossbreed, hybrid, mongrel (organism produced by mating of individuals of different varieties or breeds)

misshapen, unsuccessful cake

failure (any thing or object that has turned out not as intended)

A type of lower quality or hybrid silk.

clutter (unnecessary branches or offshoots of a tree or shrub)

Source: wiktionary.org