nutcracker

noun

1. An implement for cracking nuts.
2. (abbreviation, alt-of, broadly, ellipsis)An implement for cracking nuts.
3. Any bird of the genus Nucifraga in the crow family.
4. (New-York-City, US)A bootleg mixed drink made from a blend of alcohols and fruit juices.

   “The colorful bottles have popped up every summer in black and Hispanic communities — from the bodegas of Washington Heights to the stoops of Fort Greene — since the early 1990s. On beach boardwalks, at neighborhood basketball courts and block parties, New Yorkers are drinking nutcrackers, boozy homespun cocktails made from a blend of alcohol and fruit juices.”

5. (informal)Something that is difficult to figure out; a puzzle.

   “I hadn't been to school for a while so the math was a real nutcracker”