What is the meaning of Gacha?

A small toy sold in a plastic capsule in a vending machine, especially toys sold in or associated with Japan.

The vending machine that sells such toys.

A mechanism in certain video games, especially mobile games, whereby in-game items or characters are purchased randomly with real or in-game money.

A game which features this mechanic as its central feature.

A village-level administrative division in Inner Mongolia.

third-person singular past historic of gacher

genitive/accusative singular of gach

liquid mass

porridge, gruel, mush

feminine singular of gacho

gacha (a mechanic in video games)

gacha (a game which features this mechanic)

soft mutation of cacha

Source: Wiktionary