What is the meaning of Brak?

Brackish.

A dog of mixed breed; a mongrel.

defect

trash, leftovers, refuse (what is designated as bad; what is is leftover after what is good is taken)

fallow

brackish, brack water

brackish

bad

hungover

hound, brach

singular past indicative of breken

romanization of 𐌱𐍂𐌰𐌺

crash, din (sound of something breaking)

wreckage, broken wood, etc.

workshop

lack (non-existence of something)

choice (what is taken n. selected from a group of individuals of the same kind)

trash, leftovers, refuse (what is designated as bad; what is is leftover after what is good is taken)

choice, selection

lack (non-existence of something) [with w (+ locative) ‘in what’]

defect (fault or malfunction)

faulty product (defective item that is the result of creation)

choice; selection

there is/are no; to be wanting [with genitive ‘what there is not’ and dative ‘for/on whom’]

synonym of potrzeba

marriage

lack (non-existence of something)

type, kind

a loud crashing sound like the sound of a large tree falling or a structure collapsing

reject, defective product

Source: wiktionary.org