The term squash can refer to several different things, depending on context.
1) Squash is a type of vegetable that belongs to the gourd family and is characterized by its hard, ribbed skin and sweet, nutty flavor. It's commonly used in savory dishes such as curries or ratatouille, but can also be eaten raw in salads or juiced.
2) Squash is a popular game that originated in England in the 18th century and is played using rackets on a small court with low walls. The objective of the game is to hit a lightweight ball so it lands in the opponent's half of the court, while also trying to prevent the same from happening to your own side.
3) Squash can also refer to a type of beverage made by mixing fruit or vegetables with water and sugar. It's often served as a refreshing drink during hot weather.