from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The cardinal number equal to 4 × 10.
- n. A decade or the numbers from 40 to 49: They stopped smoking in their forties. At night the temperature fell into the forties.
- n. The decade from 40 to 49 in a century.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The cardinal number occurring after thirty-nine and before forty-one.
- n. A 40 ounce bottle of beer.
from the GNU version of the Collaborative International Dictionary of English
- adj. Four times ten; thirty-nine and one more.
- n. The sum of four tens; forty units or objects.
- n. A symbol expressing forty units; as, 40, or xl.
from The Century Dictionary and Cyclopedia
- Four times ten; ten more than thirty, or one more than thirty-nine: a cardinal numeral.
- The sum of four tens, or of thirty-nine and one.
- A symbol representing this number, as 40, XL, or xl.
- The name (with qualifying terms) of two appellate civil tribunals and a criminal court in the Venetian republic.
- A collective designation of the members of the French Academy, forty in number. Also called the Forty Immortals.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. being ten more than thirty
- n. the cardinal number that is the product of ten and four
Middle English, from Old English fēowertig; see kwetwer- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)