The Collaborative International Dictionary
Shoeing-horn
Shoehorn \Shoe"horn`\, Shoeing-horn \Shoe"ing-horn`\, n.
A curved piece of polished horn, wood, or metal used to facilitate the entrance of the foot into a shoe.
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Figuratively:
Anything by which a transaction is facilitated; a medium; -- by way of contempt.
--Spectator.Anything which draws on or allures; an inducement. [Low]
--Beau. & Fl.
Wiktionary
shoeing-horn
n. 1 shoehorn 2 (context obsolete English) often used in Elizabethan English to mean anything that would induce or "draw on" thirst