Definition of "thumbs-up" []

• An act, instance, or sign of approval. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Dabney St. Claire gives me a thumbs-up, which is way better than what the tomato gives me—a look like I am the thing she just stepped in that smells bad."
• "A thumbs-up generally provides more reliable coverage as an ok hand sign in Italy, where some believe it has conveyed approval at least since ancient audience members used it to cast their opinions on deserved fates of gladiators."
• "Older Italians in particular will be happier to see a thumbs-up, since the OK hand gesture resembles one that was quite offensive in less global times."