Top Definition
An achievement of extreme success unparalleled by lesser men, esp. relating to sporting or academic pursuits. Typically a lachlanporteous will be performed by a man with many talents and many romantic conquests.
"George Gregan did a lachlanporteous for his captainship of the Wallabies."
"You did a lachlanporteous on her."
by ntfactor April 27, 2012
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.