The Collaborative International Dictionary of English v.0.48:
Capapie \Cap`*a*pie"\, adv. [OF. (?) cap-a-pie, from head to foot, now de pied en cap from foot to head; L. pes foot + caput head.] From head to foot; at all points. "He was armed cap-a-pie." --Prescott. [1913 Webster]WordNet (r) 3.0 (2006):
cap-a-pie adv 1: at all points from head to foot; "he was armed cap-a-pie" [syn: cap-a-pie, from head to toe]