Ballast is a friendly reference to; a mate, sidekick, wife, bitch, girlfriend, boyfriend, trick, pal, etc. but especially the person who rides shotgun with them in their car.
Used by Eddie Haskel to describe Lumpy in an episode of "Leave It To Beaver".
The Cisco Kid had Pancho for ballast, Tarzan had Cheeta.
by Jim Inman August 25, 2006
Get the mug
Get a ballast mug for your Facebook friend Riley.
A derogatory name given to a person who is withholding a comment/skill/resource in order to purposefully change the atmosphere in which he is residing by then revealing the sandbagged item.
A person who is a Ballast is one who pretends to have no Snickers when asked, but really does and is just waiting to lower the general mood of his surroundings with the no, then appear bring the mood that much higher when the hidden Snickers have been revealed.
by Crafty Madhes November 14, 2010
Get the mug
Get a Ballast mug for your friend Nathalie.
buy the domain for your travel blog
The least attractive female in a group of females. Normally, female friends/aquaintances like to attach ballast to their group to make themselves look better.
Tom: Hey Rob check out that group of hotties over there by the bar.

Rob: Yeah but the one with the huge funbags is so ballast.

Tom: I'd still do her though, wouldn't you?

Rob: In a heartbeat
by Kevin Mooney October 05, 2006
Get the mug
Get a ballast mug for your daughter-in-law Helena.