Scottish slang. Can be used to describe someone who is making a complete cunt of themselves. Once hearing being called this they should shut their trap (mouth)
"Hear, did you see that roaster oan x-factor the other night?"

"Shut yer puss ya roaster"
by glaswegian_slang#1 May 9, 2009
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Someone undesirable, unreliable and that always speaks rubbish.
Hes not turned up for work again today. What a total roaster.
by Mahaki March 13, 2012
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Irish slang, used to refer to a generally a man (but possibly a woman) from a rural area who displays poor etiquette, fashion-sense, table manners and generally backwards behaviour. Common to be poorly groomed. Likes GAA, hates the Brits. Likes black pudding, afraid of public transport.
See that lad wearing the bootcut jeans and brown shoes drinking the pint of cider, what a roaster!
by creamcrackers September 23, 2022
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The appropriate description of defecating on an oven tray which is then placed in the oven on high bake, ideally fan, and with the oven closed, left to roast.
Man, this party sucks. Lets do the Roaster and get the hell outta here!
by Pete Kampas August 17, 2007
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this one is hard to define. 90's scottish school word. If someone is a bit sad or just plain roasting! Very laughable. Nothing to do with heat I might add.
He or she is roastin'!
What a roaster!
Also see scadder or boiler.
by Kelly Coyle December 3, 2003
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Word used to describe an employee at work when there annoying you.
1. See that girl Judith shes a total roaster

2. Wow stop being a bunch of Roasters (to a group of employees)
by CMax Guy November 7, 2013
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Google defines roaster as:

1) a harsh or humorous critic (sometimes intended as a facetious compliment)
2) a cook who roasts food
3) flesh of a large young chicken over 3 1/2 lb suitable for roasting
4) a special cooking pan for roasting
1) "the honoree gave his roasters as good as he got"
by Jimmybone D March 16, 2009
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