granny gear 

The smallest of chainrings on a bicycle with three chainrings. So easy to pedal your grandmother could ride it.

That hill was so steep, I wish my bike had a granny gear to get up it.

granny gear by JoshCyclist January 20, 2006

granny gear 

An extremely low first gear in a four-speed truck transmission. It is used for climbing steep hills, for moving slowly over bad terrain, or for driving slowly.

We drove to the top of Mount Bross (14,172 feet) in granny gear.

granny gear by Bumkicker Slade May 10, 2005

granny gear 

The smallest of a triple front chainring set. Called a granny ring because, like granny, it doesn't have many teeth.

You may have to drop it down to granny gear for this steep pinch.

granny gear by Duncan Withers August 19, 2008

Granny Gear 

When thrust and stamina are valued more than a ferocious tempo, one "jams it into granny" to really get her going

Uh oh she's falling to sleep, jam her into Granny Gear!

Granny Gear by themaplemolester December 5, 2010