When playing Texas Hold 'em poker. The player with the small and big blinds put the blinds into one(for example if one of the players needs change from the blind)
Small blind is £100, Big blind is £200. Big blind puts in 2 £100 chips, small blind only has a £200 chip. They put the £200 chip in and take £100 change from big blind, the blinds are now combined or as we call it at our regular game "comblind"
To take something small, that doesn't quite qualify as a theft. Probably from the Danish "skæv" or the Dutch "scheef", both of which are pronounced similarly, meaning "askew, or not quite right'. To change an item's ownership without permission, but only something small and of little worth.
"I skeefed an apple off the neighbor's tree." "I skeefed some chips outta your bag when you looked away." "Don't skeef my chair when I go to the bathroom."