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1.
Name of the individual with the largest, thicket, healthiest penis on the planet. Often used when comparing other penis sizes.
Girl 1: His penis was huge! Probably almost 1/10 of a Lochlan!
Girl 2: Whoa, that's almost 9 inches right?
by Kola January 27, 2003
 
2.
a guy who dates a lot of girls just for the sake of having a girlfriend
jeez that lochlan on to one over to the next
by datsurfchick June 24, 2014
 
3.
Cunt-hole-dick-fucker-skinny-cunt-wank-stain-dick-muncher
Guy 1: Hey did you see what Dave did the other day?

Guy 2: Yeah he was acting like a real Lochlan
by ThingyWithTheName October 20, 2013