The story
- Old French · derived fromcoustillier“soldier armed with a <i class="Latn mention" lang="fro">coustille</i> (“double-edged sword”)”
- English todaycoistrel
From Old French coustillier (“soldier armed with a coustille (“double-edged sword”)”).
Words from the same roots
Etymology from Wiktionary, CC BY-SA 4.0.