Kalmar “brachyurous” sifa ce da ke bayyana wani abu mai gajeru ko gajarta wutsiya ko abubuwan da ke tattare da su, musamman dangane da wasu nau’o’in crustaceans kamar kagu. An samo kalmar daga kalmomin Helenanci "brachys," ma'ana gajere, da "ura," ma'ana wutsiya. Don haka, ma'anar ƙamus na "brachyurous" shine "samun gajeriyar wutsiya ko gajeriyar wutsiya, musamman dangane da wasu nau'ikan crustaceans."