1.
lavish spending; generous treat; extravagant hospitality
An act of spending generously or treating people lavishly, especially when hosting a feast or giving gifts. Can be positive (genuine generosity) or slightly critical (excessive spending).
Originally referred to serving food on a large tray (大盤) in a grand manner (振る舞い, a feast or banquet). Now used more broadly for any lavish or generous spending or entertaining.
Usage
Can carry either a positive nuance (admiring someone's generosity) or a slightly negative one (implying reckless or politically motivated spending), depending on context.