Definition 1 of 1
All these and many more are all functions. A function is any celebratory social public affair where a large number of people mill around in small groups chatting and waiting for the catered food service to begin. As soon as the food counters are open, a mad dash ensues, and once all have taken, all leave.
What one might expect to be a fairly small event could be bumped up to the status of "function" through extravagance, ostentation, and an expanded guest list. If there is a parking problem outside, it's a function. If the garish decoration and flood lighting is visible from the main road, it's a function.
Your little brother's fancy dress party is NOT a function. Unless it's at a farm house in Delhi, in which case there's valet parking, a 5-cuisine spread, teen patthi, one outdoor bar with only gold label and another for the rest of the brands. A function.
Mukunda: "Is that a function of time or a function of energy?"
Bairam: "Gaandu, it's some function of the farm house on the left, saaaalas... I'll shoot the bastards."