Ma'anar ƙamus na kalmar "gibbosity" ita ce fitowa ko kumburi a sama ko wani abu, sau da yawa a cikin tsari mara kyau ko zagaye. An fi amfani da shi a cikin mahallin jikin mutum don kwatanta haɓakar ƙashi ko guringuntsi, kamar haɗin gwiwa ko kullu akan kashi. Kalmar “gibbous” kalma ce da ke da alaƙa da ake yawan amfani da ita wajen kwatanta yanayin wata idan ya wuce rabi amma ƙasa da cikakkiyar haske, yana bayyana a matsayin ƙumburi ko zagaye.