noun: An item of unknown purpose, often unnecessary or useless or annoying.
noun: (computing, slang) A program that has messy source code.
noun: (electronics) An electronic signal that is normally high or on, but goes low for a very short period and then returns to high. A low going spike.
noun: (geology) A hammer used by geologists to chop rock samples from boulders for examination.
noun: (welding) A hammer used by electric welders to knock slag off of the welded joint, sometimes having a spring handle to lessen shock to the hands.
noun: (air conditioning) A container/tank for refrigerant gas.
noun: (military) A portable, collapsible container for liquid fuel.
noun: An impossible trident .
noun: (Lineman, slang) Used in construction utility linework to create an open point in distribution lines.