Deandra Dottin claimed stunning figures of 5-5 in 3.4 overs as Windies Women rolled Bangladesh for 46 to kick off their World T20 defence with a 60-run victory in Providence.
No Bangladesh batter reached double figures - Fargana Hoque top-scoring with eight - as Dottin's rapid spell earned her the third-best figures in Women's Twenty20 internationals.
Tournament hosts Windies needed something special after scraping to 106-8 - skipper Stafanie Taylor (29) and Kycia Knight (32) the only players to fire as Jahanara Alam (3-23) and Rumana Ahmed (2-16) led a disciplined bowling display.
Dottin duly obliged, striking twice in her first over - Hoque clothing a searing bouncer back to the seamer - and then twice more in her second.
The 27-year-old sealed her five-wicket haul by poleaxing Salma Khatun's middle stump at the start of her fourth over, with Windies wrapping up the win three balls later with a run out - Bangladesh skittled in 14.4 overs.
Dottin delivered 18 dot balls out of 22 en route to the best bowling figures at a Women's World T20, beating Sune Luus' 5-8 for South Africa against Ireland during the 2016 event in India.
Bangladesh's total is also the lowest in Women's World T20 history, knocking the 58-9 they scored against England at Sylhet in 2014 into second place.
Meanwhile, Favourites Australia began their Women's World Twenty20 campaign with a 52-run win over Pakistan in Guyana.
The world number one side made 165-5, with three players passing 40, and Pakistan never challenged with 113-8.
India, yet to reach a World T20 final, beat New Zealand by 34 runs after posting 194-5, captain Harmanpreet Kaur striking eight sixes in her 103.
