Ma'anar ƙamus na kalmar "gero lu'u-lu'u" ita ce kamar haka:Noun:Nau'in ciyawa ce (Pennisetum glaucum) da ake shukawa a cikin ko'ina. yankuna masu zafi da na wurare masu zafi don hatsinsa, wanda ake amfani da shi azaman abinci ga mutane da dabbobi. Har ila yau, ana kiransa "Bajra" a cikin Hindi, "Kambu" a Tamil, da "Kambam" a Malayalam.Hatsi ko iri na shukar gero lu'u-lu'u, ana amfani da shi azaman abinci mai mahimmanci a yawancin al'adu da abinci. Nau'in amfanin gona ko shukar kiwo da ake amfani da shi wajen ciyar da dabbobi da samar da ciyawa. ana girma a cikin bushes da yankuna masu bushewa na Afirka, Asiya, da Amurka. Yana da darajar sinadirai masu yawa, kasancewarsa kyakkyawan tushen fiber na abinci, furotin, da ma'adanai daban-daban, kuma ana amfani dashi a cikin shirye-shiryen dafuwa iri-iri, kamar porridge, burodi, da abubuwan sha. Baya ga amfanin noma da kayan girki, ana kuma amfani da gero lu'u-lu'u a magungunan gargajiya domin amfanin lafiyarsa.