Definitions include: the cleft between the cheeks of the buttocks. Definitions include: the pressing of one's unclothed buttocks against a window. Definitions include: so large (or possessing such large buttocks) that one cannot fit in the seats in the coach section of an airplane.
The very first commercially available televisions were seen in the UK in 1928 / 1929. The coincided with the first public television broadcasts made.
The FIRST Program Guide - Issued June 30 to July 5th, 1941. The first two TV stations licensed for commercial broadcasting were New Yorks WNBT (which later became WNBC) and WCBW. They were both licensed on July 1, 1941.