Splawn rhymes with:
aguillon, balon, couvillon, flawn, laun, lawn, madelon, matalon, mcglaun, pilon, villalon
Splawn sounds like:
sabalan, sablan, schieffelin, scopolamine, sephlon, shevlin, shovlin, sjoblom, sobelman, spallone, speelman, spellman, spelman, spielman, spielmann, spillane, spillman, spilman, splain, splaine, spleen, sublime