/ Dictionary / Index H Hainan Strait: Meaning and Definition of Find definitions for: Hai'nan' Strait' Pronunciation: [key] a strait between Hainan island and Leizhou peninsula. 50 mi. (81 km) long; 15 mi. (24 km) wide. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Hainan Hainaut Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language