The Collaborative International Dictionary of English v.0.48:
Macer \Ma"cer\, n. [F. massier. See Mace staff.] A mace bearer; an officer of a court. --P. Plowman. [1913 Webster]WordNet (r) 3.0 (2006):
macer n 1: an official who carries a mace of office [syn: macebearer, mace, macer]