This is the 2835th most frequent Catalan word.
cosí
"Cousin."
'Cosí' refers to a male cousin as a noun, indicating a familial relationship.
El meu cosí viu a Barcelona.
My cousin lives in Barcelona.
'Cosí' again functions as a noun, specifying a family member in a past event.
Ahir vaig veure el meu cosí al parc.
Yesterday, I saw my cousin at the park.
'Cosí' is used as a noun to identify the speaker's family member participating in the described activity.