The Collaborative International Dictionary of English v.0.48:
Benefic \Be*nef"ic\, a. [L. beneficus. See Benefice.] Favorable; beneficent. --Milton. [1913 Webster]WordNet (r) 3.0 (2006):
benefic adj 1: exerting a favorable or beneficent influence; "a benefic star"; "a benefic force"