Kalmar "jumbojet" tana nufin babban jirgin sama na kasuwanci mai faɗin jiki, yawanci mai ɗaukar fasinjoji sama da 400 da tsayin sama da mita 70 gabaɗaya. Ana amfani da kalmar "jumbo" a matsayin wani abu da ba a saba gani ba, don bayyana wani abu mai girma da ba a saba gani ba, kuma a fannin zirga-zirgar jiragen sama, musamman yana nufin jirgin Boeing 747, wanda shi ne jirgi na farko da aka fi kiransa da jumbojet a lokacin da ya ke. shiga sabis a cikin 1970s. A yau, ana yawan amfani da kalmar dalla-dalla don kwatanta kowane babban jirgin sama na kasuwanci, ba tare da la'akari da masana'anta ko samfurin ba.