The story
- Spanish · borrowed fromcostal
- Latin · derived fromcosta“rib”
- Medieval Latin · borrowed fromcostālis
- French · borrowed fromcostal
- English todaycostal
From French costal and its etymon Medieval Latin costālis, from Latin costa (“rib”). As a Spanish unit, via Spanish costal. By surface analysis, costa + -al. Piecewise doublet of coastal.
Words from the same roots
Latincosta all →
costcoastcostacotecoastercutletcoteauDacostaCôte d'Orcottiseda Costa
Etymology from Wiktionary, CC BY-SA 4.0.