entertainment-n; 2 Senses

Sense Number 1: an amusement, performance or diversion

Commentary: ENTERTAINMENT[+event][+diversion][+performance] [+activity][+amusement][+audience]
NOTE: implies a performance or diversion

A clown was provided for the entertainment of the children.
John recently bought a new home entertainment system.
Tonight's entertainment will include a skit by our colleagues.
He worked in the entertainment industry for twenty years.
I read those blogs for my own entertainment.

WordNet 3.0 Sense Numbers: 1

Sense Number 2: receiving guests into one's home

Commentary: ENTERTAINMENT[+activity][+reception][+home][+guests]
NOTE: implies holding parties, occasions in one's home
NOTE: an alternate for the noun 'entertaining'

This house is not suitable for entertainment.
Mary was well practiced at the art of dinner party entertainment.
They've cut back on their entertainment since the birth of their twins.

WordNet 0.0 Sense Numbers: 1b