Its not, Bulma is a character in DragonBall-Z, she was named after Japanese gym shorts. https://en.wikipedia.org/wiki/Bulma https://en.wikipedia.org/wiki/Bulma

Its not, Bulma is a character in DragonBall-Z, she was named after Japanese gym shorts. https://en.wikipedia.org/wiki/Bulma https://en.wikipedia.org/wiki/Bulma Her name "Buruma" is the Japanese pronunciation of "bloomer", a type of gym shorts worn by Japanese girls at school.[5][7][8][9] As with most characters in the Dragon Ball series, Bulma's name is consistent with those of the rest of her family. All of Bulma's family members are named after underclothing of some sort.[9] Her father's name is Dr. Briefs, while her son and daughter are named Trunks and Bra (ブラ Bura?, "Bulla" in the English anime dub) respectively. Pretty sure the author meant to name the framework after the character and failed to realize what the character was named after.