sardines
"Sardines" is a word with two main uses. Most commonly, it refers to a type of small fish — but it also appears in a very popular figurative expression you will hear often in everyday English.
Because sardines in a tin are squeezed together with almost no space, English speakers use the phrase 'packed like sardines' to describe people or things that are crammed into a very small space. If you are on a crowded train where everyone is pressed against each other, you are 'packed like sardines'.
everyday language · Modern, widely used · figurative
Sardines is also the name of a fun hiding game, like a reverse version of hide-and-seek. One person hides, and everyone else searches for them. When you find the hidden person, you quietly squeeze in and hide with them — just like sardines in a tin! The last person to find the group loses.
games / childhood · Modern, widely used