/bætɑrdəː/ or /bætrdˈoʊ/ or /bætɑrˈdō/ but a more precise and common pronunciation is /bætɑrˈdɔ/ (BAY-tar-DOW)

Definitions

1. noun

A small, shallow boat or a boat with a high bow and a low stern, especially one used by rivermen on the Seine.

“The batardeau was used by fishermen on the Seine to catch fish in the shallow waters.”