whimsy

1. A quaint and fanciful idea; a whim; playfully odd behaviour. (uncountable)
2. An impulsive, illogical or capricious character. (uncountable)
3. A whim (capstan or vertical drum). (countable)
4. A jigsaw puzzle piece that has been cut into a recognizable shape, as if on a whim; often the shape is representative of the theme of the image used for the puzzle. (countable)
5. The support that protects a finished piece as it is detached from a punty. (countable)

الجمع whimsies