Sabbir Rahman contributed with bat and ball as Bangladesh exposed Zimbabwe's familiar failings with the bat to win Sunday's Twenty20 contest by 42 runs and take a commanding 2-0 lead in the four-match series.
Soumya Sarkar (43) and Sabbir (43 not out) led Bangladesh to a decent, but surmountable, score of 167-3 in Khulna.
Zimbabwe started well enough in reply with Hamilton Masakadza (30) - acting as captain with Elton Chigumbura dropped - and Vusi Sibanda (21) taking the tourists to 50-1.
But - as in their four-wicket defeat in the first contest - the middle order largely failed to contribute, Malcolm Waller's 29 the best effort as Zimbabwe slumped to 125-8 with Sabbir (3-11) the pick of Bangladesh's bowlers.
Bangladesh won the toss and batted first. A promising 45-run opening stand between Tamim Iqbal (23) and Sarkar ended when Tamim top-edged Taurai Muzarabani's (1-35) slower ball to Brian Vitori at short fine leg.
Sarkar was in good nick and hit a poor Graeme Cremer (1-29) delivery straight over the ropes, before following up in the next over by launching Wellington Masakadza (1-32) over long on for six.
The hosts were pegged back by two quick dismissals. Sarkar was caught in the deep attempting to slog Cremer, before Mahmudullah (1) nicked Wellington Masakadza behind.
Sabbir and Mushfiqur Rahim (24) upped the run-rate with a stand of 52 until the latter retired hurt after suffering with apparent cramp.
Shakib Al Hasan came in to join Sabbir and he boosted the total with a quick-fire 27 off 17.
Hamilton Masakadza, fresh off an impressive 79 in the first match, hit three fours and two sixes in an impressive start.
But Sibanda was bowled by home captain Mashrafe Mortaza (1-25) before a flurry of three wickets in as many overs derailed Zimbabwe, Sabbir accounted for Hamilton Masakadza and Richmond Mutumbami (7) either side of Sean Williams (7) falling lbw to Shuvagata Hom (1-18).
Waller then went on the attack and his knock came from just 21 balls.
However, he smashed a full toss from Al-Amin Hossain (1-21) toward Sarkar at extra cover and that signalled the end of Zimbabwe's already slim hopes of a recovery.