Word of the Day
Apps by Dictionary
Know how to use "fewer" and "less"? Find out.
a flap that is located on the under surface of the trailing edge of an aircraft wing and that splits away from the wing structure when rotated downward, producing an increase in lift or drag or both.
a flap that is located on the upper surface of the trailing edge of an aircraft wing and that acts as a spoiler when rotated upward.
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Discover our greatest slideshows
8 Wintry Words
A lot vs. Alot: 9 Grammatical...
10 Words Coined in the Sci-Fi...
9 Words About Beginnings
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Difficulty index for
Few English speakers likely know this word
Word Value for
Words With Friends
When I split an infinitive, God damn it, I split it so it will stay split.
Society cannot share a common communication system so long as it is split into warring factions.
Every great mistake has a halfway moment, a split second when it can be recalled and perhaps...
Pearl S. Buck
Nearby words for split-flap
split renal-function test
split the difference
split the scene
split the sheets