copallero Share definition Flag /cop-al-yair-oh/ – a mounted police officer (not gender specific) The bicycle thief tried a getaway through the park trails, but copalleros soon caught him. copallero by ΔиłĦ☼иצ ߀₡ʞ December 2, 2010 0 0 Get merch Get the copallero mug. Buy Now — $32.95 See more merch