This is the 1818th most frequent Catalan word.
cua
"Tail."
Here, 'cua' means 'line' or 'queue', referring to a group of people waiting for something.
Vaig veure una cua llarga per comprar entrades al teatre.
I saw a long line to buy tickets at the theater.
In this sentence, 'cua' means 'tail', referring to the physical tail of an animal.
El gos mou la seva cua quan està content.
The dog moves its tail when it is happy.
Here, 'cua' refers to the 'tail' of a meteorite, describing the luminous trail left by it in the sky.