Do not apply nail polish remover to the stain; it will quickly damage finish. Instead, soften the nail polish by rubbing it with a cloth saturated in mineral spirits.
CAUTION: Dry-cleaning spot remover and mineral spirits are poisonous and flammable. Follow caution on labels. Use in well-ventilated area. Do not use near flame, spark, or pilot light. Do not smoke. Do not get on skin or clothing. If the finish is hard, apply paste wax with fine 0000 steel wool in the direction of the grain. Apply a small amount of oil to an oil finish.