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1650s (implied in stoker), "to feed and stir up a fire in a fireplace," from Dutch stoken "to stoke," from Middle Dutch stoken "to poke, thrust," related to stoc "stick, stump," from Proto-Germanic *stok-, variant of *stik-, *stek- "pierce, prick" (see stick (v.)). Stoked "enthusiastic" recorded in surfer slang by 1963, but the extension of the word to persons is older:
Having "stoked up," as the men called it, the brigades paraded at 10.30 a.m., ready for the next stage of the march. ["Cassell's History of the Boer War," 1901]
A unit of kinematic viscosity equal to that of a fluid with a viscosity of one poise and a density of one gram per milliliter.