Entertaiment | Meaning in the Cambridge English Dictionary
The word entertainment can be abbreviated to entmt, but this is rare and only used on fliers or industry news publications when space is limited. It is not abbreviated in general prose or speech.
Something that gives pleasure or diversion; an agreeable occupation for the mind: The daily crossword puzzle is a popular form of entertainment.
The idea behind most forms of entertainment is to give people a good time and make them forget their troubles. However, some entertainments can have a more serious purpose and may even be considered cruel by some.