To see a dulcimer in your dream represents untroubled situations, easiness in relationship, cheerful attitudes and a carefree life where your wishes will be favourably realized.
Dream dictionary: Dulcimer dream meanings
Dreaming of a dulcimer, denotes that the highest wishes in life will be attained by exalted qualities of mind. To women, this is significant of a life free from those petty jealousies which usually make women unhappy.