Since I ran out of the popular weekly Amalgam poems last week, I will compensate by offering two Archaic Definitions:
quillon One of the two arms that form a sword’s cross-guard, the device that protects the swordsman’s hand.
quoin A wooden edge with a handle at the thick end used to adjust the elevation of a [ship’s] gun.
– A Sea of Words : A Lexicon and Companion for Patrick O’Brian’s Seafaring Tales (Third Edition) by Dean King with John B. Hattendorf and J. Worth Estes.