The Collaborative International Dictionary of English v.0.48:
Bolo \Bo"lo\, n. [Sp.] A kind of large knife resembling a machete. [Phil. Islands] [Webster 1913 Suppl.]WordNet (r) 3.0 (2006):
bolo n 1: a cord fastened around the neck with an ornamental clasp and worn as a necktie [syn: bolo tie, bolo, bola tie, bola] 2: long heavy knife with a single edge; of Philippine origin [syn: bolo, bolo knife]