CROWNWORK
crown, crownwork, jacket, jacket crown, cap
(noun) (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth; “tomorrow my dentist will fit me for a crown”
Source: WordNet® 3.1
Etymology
Noun
crownwork (plural crownworks)
A type of fortification, like a hornwork, but consisting of a full bastion with the walls on either side ending in half-bastions from which longer flank walls run back towards the main fortress.
(dentistry) The addition of a crown.
Source: Wiktionary
Crown"work` (-wrk`), n. (Fort.)
Definition: A work consisting of two or more bastioned fronts, with their
outworks, covering an enceinte, a bridgehead, etc., and connected by
wings with the main work or the river bank.
Source: Webster’s Unabridged Dictionary 1913 Edition