Halin Hordeum yana nufin rukuni na tsire-tsire na shekara-shekara da na dindindin a cikin dangin ciyawa, Poaceae. Kalmar "Hordeum" ta fito ne daga kalmar Latin don sha'ir, wanda shine daya daga cikin sanannun membobin jinsin. Halin ya ƙunshi nau'ikan ciyawa iri-iri waɗanda ake nomawa don abinci, abincin dabbobi, da abubuwan ado. Wasu daga cikin jinsunan da aka fi sani a cikin jinsin Hordeum sun haɗa da sha'ir, sha'ir foxtail, da sha'ir daji.