gadget

noun

1. (obsolete)A thing whose name cannot be remembered; thingamajig, doohickey.

   “Then the names of all the other things on board a ship! I don't know half of them yet; even the sailors forget at times, and if the exact name of anything they want happens to slip from their memory, they call it a chicken-fixing, or a gadjet, or a timmey-noggy, or a wim-wom—just pro tem., you know.”

2. Any device or machine, especially one whose name cannot be recalled, often either clever or complicated.

   “He bought a neat new gadget for shredding potatoes.”

   “That's quite a lot of gadgets you have collected. Do you use any of them?”

   “Cory will find cool gadgets along the way that you can use against enemies or to solve puzzles.”

3. (informal)Any consumer electronics product.

   “From the Marvel Mixmaster to the Miracle Microwave, every time a new-fangled gadget has lobbed into the Aussie kitchen, Aussie mums have changed their cooking styles accordingly.”

4. A sequence of machine code instructions crafted as part of an exploit that attempts to divert execution to a memory location chosen by the attacker.

   “A Spectre gadget was found in the Linux kernel's implementation of system interrupts.”

5. A technique for converting a part of one problem to an equivalent part of another problem, used in constructing reductions.

   “We reduce an instance of 3-SAT to an instance of bird-flock-optimization, using a gadget that converts each conjunctive Boolean clause to a group of birds.”

6. A spring clip attached to the end of a punty in order to grasp the foot of a glass without leaving a bullion while finishing the bowl.