To touch one's foot to the ground while bicycling. Considered to be a lost style point among trail riders, mountain bikers, bike polo players, among others. Since a lot of technical tricks can be avoided by simply walking the bike over a log or a stream, refraining from dabbing a foot encourages pure cycling and the attempt to negotiate obstacles by technical feats such as hopping or holding a track stand. Sometimes called a "foot down."

A "dab" is when a cyclist touches the ground with his or her foot, shoe, etc. It is avoided in many disciplines such as mountain biking and trials riding.

To score one point by footing in Observed Moto Trials.

To administer a drug in powder form orally by getting some on the index finger and rubbing it all over the gums.

A term used in bouldering (rock-climbing on boulders) to denote hitting the floor or a friend with a body part while climbing. A dab can allow a climber to continue instead of falling off, so is regarded as invalidating an ascent (or "send")

A battered potato (Potato fritter)

to stay off the nose candy for awhile, but then every now and then you "dab"