This is the 10226th most frequent Spanish word.
colchonero
"Colchonero" refers to an upholsterer, specifically one who makes or repairs mattresses. It can also refer to a supporter or player of Atlético Madrid soccer team.
In this sentence, 'colchonero' refers to the Atlético Madrid football club, as it is a popular nickname due to their historical mattress-like striped uniform.
El equipo colchonero ganó el partido ayer.
The mattress team won the match yesterday.
Here, 'colchonero' is used to mean a mattress cover or protector, which is an item placed over a mattress for protection or added comfort.
Compré un colchonero nuevo para mi cama.
I bought a new mattress cover for my bed.
In this sentence, 'colchonero' denotes a profession, specifically someone who manufactures or repairs mattresses.