C in PC
Puzzle 15 of Famous Horses Hard Pack
Question is: C in PC
and the answer is: COMPUTER
Word Meaning:
COMPUTER — A programmable electronic device that performs mathematical calculations and logical operations, especially one that can process, store and retrieve large amounts of data very quickly; now especially, a small one for personal or home use employed for manipulating text or graphics, accessing the Internet, or playing games or media.
Definitions from Wiktionary.