The Collaborative International Dictionary of English v.0.48:
Fiord \Fiord\ (fy?rd; i or y consonant, [sect] 272), n. [Dan. & Norw. fiord. See Frith.] A narrow inlet of the sea, penetrating between high banks or rocks, as on the coasts of Norway and Alaska. [Written also fjord.] [1913 Webster]WordNet (r) 3.0 (2006):
fiord n 1: a long narrow inlet of the sea between steep cliffs; common in Norway [syn: fjord, fiord]