The Collaborative International Dictionary of English v.0.48:
Roadstead \Road"stead\, n. [Road, 4 + stead a place.] An anchorage off shore. Same as Road, 4. [1913 Webster] Moored in the neighboring roadstead. --Longfellow. [1913 Webster]WordNet (r) 3.0 (2006):
roadstead n 1: a partly sheltered anchorage [syn: roads, roadstead]