In rail-laying, a workman who drives the spikes.(noun)
The Century Dictionary (Public Domain)
Use "spiker" in a sentence
"A small robocraft called a spiker, one of several controlled by the mothership, would then fly up and zap the errant iceberg in a calculated pattern, producing jets of superheated steam that would thrust it into a safer orbit."
"I thought 'spiker' was a good choice and I even put out a plug for it in one my posts."
"The shorter and spiker and more shaved your hair is, the harsher it makes you look, as you age."