The American Heritage® Dictionary of the English Language: Fourth Edition. 2000.
median strip
NOUN:
Eastern, Midwestern, & Southern U.S. The dividing area, either paved or landscaped, between opposing lanes of traffic on some highways. Also called median, Regionalmall1, Regionalmedial strip, Regionalmeridian, Regionalneutral ground. See Regional Note at neutral ground. also called regionally Regionalboulevard.