The Collaborative International Dictionary of English v.0.48:
Dutchman \Dutch"man\, n.; pl. Dutchmen. A native, or one of the people, of Holland. [1913 Webster] Dutchman's laudanum (Bot.), a West Indian passion flower (Passiflora Murucuja); also, its fruit. Dutchman's pipe (Bot.), . [1913 Webster] Dutchman's breeches