Webster's Revised Unabridged Dictionary · 1913

Poy

Poy , noun

[Old French apui, apoi, a support, prop., staff, French appui, from Old French apuier, apoier, to support, French appuyer, from à to (Latin ad) + Old French pui, poi, a rising ground, hill, Latin podium. See Podium, Pew.]

1.
A support; -- used in composition; as, teapoy.
2.
A ropedancer's balancing pole. — Johnson
3.
A long boat hook by which barges are propelled against the stream. [Provincial English] — Halliwell