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.
1946 through 1955 was the first big growth period for television sets. In 1947 there were only about 100,000 TV sets in the U.S. (many of them in bars and clubs) but by 1953 there were 13 million. CBS started broadcasting in color in 1951, and all-electronic color sets were first introduced in 1954.