Qalab caadi ah, oo inta badan leh gacan dheer oo alwaax ah iyo madax bir ah, oo qaabaysan qaab-qaadista T-qaabeeya, oo ku fiiqan hal gees oo siman sida majarafad dhinaca kale ah.Si ballaaran loo isticmaalo, weyn ayaa loo isticmaali karaa in la jebiyo, la burburiyo dhulka adag (sida dhulka sibidhka, barafka, iwm.), yar yar ayaa loo isticmaali karaa qalab la qaadi karo, guud ahaan loo isticmaalo hawlaha dibadda.