From grice, supposed plural of grouse (on analogy to mouse/mice), from a person who bags railway locomotives as a sportsman bags grouse.
"gricer." YourDictionary, n.d. Web. 22 June 2018. <http://www.yourdictionary.com/gricer>.
gricer. (n.d.). Retrieved June 22nd, 2018, from http://www.yourdictionary.com/gricer
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