Definition of "lark" []

• Any of various chiefly Old World birds of the family Alaudidae, especially the skylark, having a sustained, melodious song. (noun)
• Any of several similar birds, such as the meadowlark. (noun)
• A carefree or spirited adventure. (noun)
• A harmless prank. (noun)
• To engage in spirited fun or merry pranks. (verb-intransitive)

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.

• ""I've suffered mor'n once from raids on my orchards and chicken coops, and found it was some town boys, off on what they called a lark, that made other people suffer.""
• "She had always been in a frolic of some sort, when I had known her in Davos, whither she had gone because she thought it would be "what you call a lark"; and she was in a frolic now, judging by her merry laughter when she saw me."
• "'Depends on what you call a lark,' said Hazell; 'it's not much of a lark tearing down midstream like this in a fog."