v (slang) To jam a door shut by inserting pennies between the doorframe and the door.
n (historical) In the United Kingdom and Ireland, a copper coin worth 1/240 of a pound sterling or Irish pound before decimalisation. Abbreviation: d.
n In the United Kingdom, a copper coin worth 1/100 of a pound sterling.
n (historical) In Ireland, a coin worth 1/100 of an Irish pound before the introduction of the euro. Abbreviation: p.
n In the US and Canada, a one-cent coin, worth 1/100 of a dollar. Abbreviation: ¢.
n In various countries, a small denomination copper or brass coin.
n A unit of nail size, said to be either the cost per 100 nails, or the number of nails per penny. Abbreviation: d.
v (context|electronics) To circumvent the trip | tripping of an electrical circuit breaker by the dangerous practice of inserting a coin in place of a fuse in a fuse socket.