Place a clean cotton cloth over the nail polish-remover stain. Fill the iron's reservoir with water and turn it on to the steam setting. When the iron is hot, press it against the cloth. Check the stain after a few seconds. If it's starting to fade, continue until it's gone. Clean the area with oil soap for wood.
Make a paste of 1 tbsp. of olive oil and 1 tbsp. of ashes from a fireplace or ashtray. Rub the paste on the stain and let it sit for 20 minutes. Wipe away with a clean cloth and clean with oil soap.
Rub the stain with fine steel wool and a pea-sized amount of white toothpaste. Follow by rubbing the area with olive oil on a cotton cloth.
Refinish the entire tabletop if the stain is deeper than the wax coating and large. Sand off the finish using a belt sander, wipe with a damp cloth and apply two or three coats of stain. Finish with a coat of lacquer.