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1.
A straightener in Liverpool is a fight between 2 people to settle their differences. - Not just a punch
Lad1: You 'angin round after school? Gilly is having a straightener with robbo!
Lad2: Yeah la deffo up for seein' that!
by tallica January 15, 2007
 
2.
Short for hair straighteners (or irons). Quicker and easier to say than hair straighteners.
Becky: Annie, pass me the straighteners please.
Annie: Sure!
by ZebraBuffalo May 29, 2013
 
3.
A small number of alcoholic drinks to regain one's composure after a stressful experience
I need a straightener after failing the driving test again
by Conal Cam May 25, 2008
 
4.
Liverpool word used by chavs (scallies - Tracksuit wearing pricks)meaning to give someone a heafty punch in the face
@Eh you fucking goth, do you wanna straightener ya pricccckkkk@
by Cheesyeggs May 04, 2005