wickie
Lighthouse-keeper's assistant, whose responsibilities typically included the tending and trimming of wicks for the light.
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... now I’m a wickie and a wickie I is. I’m damn-well wedded to this here light, and she’s been a finer, truer, quieter wife than any a liveblooded woman.
Where it comes from
From wick + -ie, because some of the wickie's duties related to supervising and tending to the wicks.
Adapted from the Wiktionary entry wickie (CC BY-SA 4.0).