C-span rhymes with:
greenspan, lifespan, saucepan, wingspan, worldspan, bedpan, deadpan, greenspan, lifespan, saucepan, wingspan, worldspan
C-span sounds like:
caban, cabana, cabin, cacophony, caffeine, capano, capen, capon, capone, caponi, capuano, caspian, cauffman, cavan, cavanah, caveman, caven, cavin, chabon, chaffin, chafin, chapin, chapman, chauvin, chavin, cheapen, cheekbone, chiappone, chiffon, chipman, chopin, chovan, cobain, cobaine, coben, cobian, cobin, coffeen, coffin, coffman, coopman, copeman, copen, coppin, coupon, coven, coveney, covin, covina, covino, cspan, cuban