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Fortunate (that something has happened or something is available to one). You're in luck—this is the last one.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
fortunate; lucky. You want a red one? You're in luck. There is one red one left. I had an accident, but I was in luck. It was not serious.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
Fortunate, enjoying success, as in You're in luck-we found your car keys. [Mid-1800s]
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Enjoying success; fortunate.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.