YESTERDAY’S SOLUTION:

NIGHTSPOT ghost, gins, gips, gist, gosh, hogs, hoping, hosing, hosting, hotting, ingot, nigh, night, nightspot, opting, pigs, ping, pings, pong, pongs, posing, posting, potting, sigh, sight, sign, sing, snog, song, spigot, spotting, sting, stingo, thing, thong, tight, tigon, ting, tings, togs, tong, tonight, toping, toting.