The Collaborative International Dictionary of English v.0.48:
Attach'e \At`ta*ch['e]"\, n. [F., p. p. of attacher. See Attach, v. t.] One attached to another person or thing, as a part of a suite or staff. Specifically: One attached to an embassy. [1913 Webster]WordNet (r) 3.0 (2006):
attache n 1: a specialist assigned to the staff of a diplomatic mission 2: a shallow and rectangular briefcase [syn: attache case, attache]