Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a wind whose speed is 13 to 18 miles per hour
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A wind with a speed from 11 to 16 knots (13 to 18 miles per hour; 20 to 30 kilometers per hour), according to the Beaufort scale.