The Collaborative International Dictionary of English v.0.48:
Commonweal \Com"mon*weal"\, n. [Common + weal.] Commonwealth. [1913 Webster] Such a prince, So kind a father of the commonweal. --Shak. [1913 Webster]WordNet (r) 3.0 (2006):
commonweal n 1: the good of a community [syn: common good, commonweal]