alpha orionis(n = noun.object) betelgeuse - the second brightest star in Orion;
is a kind of supergiant
is a member of hunter, orion

alpha, alpha and omega, alpha blocker, alpha brass, alpha bronze, alpha centauri, alpha crucis, alpha decay, alpha fetoprotein, alpha foetoprotein, alpha geminorum, alpha globulin, alpha iron, alpha methyl dopa, alpha paper, alpha particle, alpha privative, alpha radiation, alpha ray, alpha rays, alpha receptor, alpha rhythm, alpha software, alpha test, alpha wave, beta orionis