Top definition
1) Mythical prototype board for working on bottoms of cars, includes such add-ons as tool set, can swivel, lock into place, etc...

2) Someone with little or no sexual dignity.
1) The mechanic saved up all his money for a year to buy a new ratchetboard, which greatly facilitated his work.

2) "Are you going out with Maggie dude?"

"No man, I hears she's a total ratchetboard"

"Yeah man, she gets around"
by Louis K April 23, 2005
Happy St. Patties Day!