The Collaborative International Dictionary of English v.0.48:
Major-domo \Ma`jor-do"mo\, n. [Sp. mayordomo, or It. maggiordomo; both fr. LL. majordomus; L. major greater + domus house.] A man who has authority to act, within certain limits, as master of the house; a steward; also, a chief minister or officer. [1913 Webster]WordNet (r) 3.0 (2006):
major-domo n 1: the chief steward or butler of a great household [syn: major-domo, seneschal]