demi-bateaun.
/dəmibato/Etymology: French; = half-boat: see bateau n.
1853 H. Douglas (ed. 3) iii. 98 Those [pontoons] of greater breadth are formed by uniting two demi-bateaux at the broader ends so as to constitute an entire bateau.
This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2018).