A rope.
"The sailor tied his clothes to jeff to secure himself during the storm."
To play or gamble with em quads, throwing them as dice.
"The old sailor would jeff his four ivory cubes on the table to decide who went first at cards."
In plain English: To jeff means to act silly and make funny noises while moving your body around wildly.
"The kids jeffed each other on the playground until recess ended."
Usage: Jeff means to throw four-sided dice called em quads in order to play the gambling game of jacks. This term is specific to this particular regional variant and should not be confused with standard six-sided dice games like craps or backgammon.
A diminutive of the male given names Jeffrey, Jeffery, or Jefferson.
"After years of being called Jeffrey, he finally asked everyone to start calling him Jeff."
Jeff is a shortened form of Jeffrey, which evolved from the Old French aristocratic name Geoffroi. Ultimately derived from Germanic roots meaning "peaceful," the name traveled into English through Middle English variants before being clipped to its modern nickname.