Kraigg Brathwaite scored 76 after West Indies lost a wicket on the first ball of the day three.

Jermaine Blackwood made 68 to help West Indies fight.

Mehidy Hasan bagged four wickets as West Indies folded for 259 and conceded a 171-run first-innings lead.

Cornwall picked up two wickets in the second over Bangladesh stretched their lead to 218 and ended the day on 47 for 3 on the board.