crownwork

English

Etymology

crown +‎ work

Noun

crownwork (countable and uncountable, plural crownworks)

1. (countable) 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.
2. (dentistry, uncountable) The addition of a crown.