Usually used in Jamaican society to insult another being. Similar to the word bombaclaat it has a offensive meaning to deter conflict between two individuals.
The closest english translation would be bastardhole or shit features.
What the rasclaat is this pigeon doing in my room?

A wha dis likkle midgit doing with his rasclaat circus?

Who dem bare feelings dem a carry, u wan test mi food. So mi say again, WELL DUN, you rasclaat
by Damian "Well Dun" Rothbarth April 25, 2006
Jamaican swear word. Noun. Comparable to "bastard hole", Shit features, arse-cloth. Rass being "arse" and claat(or klaat) being "cloth".An insulting term for a person,also related to menstruation.
"get lost, you rasclaat!"
"oh, rasclaat!!"
by Pogmotoin October 1, 2008
a jamaican patwa word for shit. there are a multitude of other meanings, though.
ya rasclaat, clean your ass, I can smell your anus.
by addake December 2, 2018
To act in the manner of a rasclaat
Whys mans rasclaating?? Bumbaclart...
by WordBrare May 4, 2008
1) The phrase exclaimed recently after a traumatic or scarring event occurs.
2) The phase exclaimed when your wife tells you she's pregnant.
Wife: "Honey, I'm pregnant..."
You: "Bombashit and rasclaat, yuh skunt hole."
by GuyaneseSkunt November 13, 2020
substitute for an expletive- for Instance C*** or more creativly an Interesting Insult to throw at random strangers.
"Im being sent down tomorrow"
"how long?"
"um,about 3 year"
"shit kid, rasclaat blutack that Is"
by El Cholo January 30, 2004