Dictionary of Playground Slang (Online)

to main page
0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

knack

To attack someone physically. i.e. to 'kick someone's head in'. Same use as 'bray', e.g. If you thought yasel' hard you'd say 'I'll knack ye!' or 'I'll bray ye!'

(ed: similar I suppose in some respects to 'knacker')

See also: bray, knacker
Source: circa 1990's, UK (NE)