Main Entry: 1spike
Pronunciation: 'spIk
Function: noun
Etymology: Middle English, probably from Old Norse spIk splinter & spIkr spike; akin to Middle Dutch spiker spike -- more at SPOKE
1 : a very large nail
2 a : one of a row of pointed irons placed (as on the top of a wall) to prevent passage b (1) : one of several metal projections set in the sole and heel of a shoe to improve traction (2) plural : a pair of shoes having spikes attached to the soles or soles and heels c : SPINDLE 1e
3 : something resembling a spike: as a : a young mackerel not over six inches (15.2 centimeters) long b : an unbranched antler of a young deer
4 plural : SPIKE HEEL 2
5 : the act or an instance of spiking (as in volleyball)
6 a : a pointed element in a graph or tracing b : an unusually high and sharply defined maximum (as of amplitude in a wave train)
7 slang : HYPODERMIC NEEDLE
8 : a momentary sharp increase and fall in electric potential; also : ACTION POTENTIAL
9 : an abrupt sharp increase (as in prices or rates)
I think it has missed a definition.
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