Airlock rhymes with:
blackhawk, boardwalk, cornstalk, echohawk, gamecock, goshawk, honestok, jaywalk, kowalke, marschalk, mohawk, nighthawk, norwalk, poppycock, seahawk, sidewalk, skyhawk, sleepwalk, smalltalk, tomahawk, witbrock
Airlock sounds like:
aerials, airless, airlocks, arlauskas