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1.
A popular West of Ireland name, although rare in the scumbag part of the country. Jarlath is seen to be brilliant, with an intellect bordering on generational genius. Seen by others as very unique, sociable, funny and well hung. Even though you feel you don't get to see Jarlath as much as you would like, many Jarlath's have been proven to be omnipotent. Although rarely offended, Jarlath's have been known to display excessive acts of aggression when questioned what their favourite colour is.
Hey Jarlath, what's your favourite colour?

Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaahhhhh, Jarlath! Stop! Please!
by jarletto February 03, 2010
 
2.
Jarlath is a name of ancient Irish origin, from the original Iarlaith. Composed of the Irish elements ior, of unknown meaning, and flaith "lord". Jarlath is an uncommon first name for men and an equally uncommon last name for both men and women. (1990 U.S. Census)

Jarlath is strong-willed, decisive and determined, ambitious and proud. He is sensitive in his own way, but it's never easy to detect. A friend with Jarlath is a friend for life... he doesn't suffer fools gladly.
Saint Iarlaithe Mac Loga (Jarlath) - 6th Century Irish priest and scholar, patron saint of the archdiocese of Tuam, Connaught.
by Rascile February 04, 2010
 
3.
A very cool, normally ginger, person who everyone likes. He normally has a very large penis and get lots of minge.
I wish I was Jarlath.
by tweedeh October 09, 2011
 
4.
One who is named after the jar.
Jarlath drinks from a bucket.
by No pare October 28, 2009