Cockburn rhymes with:
arterburn, bradburn, camburn, clayburn, cogburn, eastburn, fairburn, fishburn, freeburn, glassburn, heartburn, kinburn, marshburn, mashburn, milburn, newburn, osburn, pangburn, redburn, sunburn, washburn, washburne, winburn, woodburn
Cockburn sounds like:
cabrini, capernaum, capron, cavern, chaperone, chevron, chiapparone, cipriani, cipriano, cobern, cobrin, coburn, coeburn, cogburn, cooperman, copperman, cyprian