This is the 6999th most frequent Russian word.
атлетико
"Атлетико" is a transliteration of "Atlético," often referring to sports clubs like Atlético Madrid.
Here, 'Атлетико' refers to the name of a football club, specifically Atletico Madrid.
Я болею за футбольный клуб Атлетико.
I support the football club Atletico.
In this example, 'Атлетико' again designates a sports club that is being performed by athletes.
На соревнованиях атлеты из клуба Атлетико показали отличные результаты.
At the competitions, the athletes from the club Atletico demonstrated excellent results.
'Атлетико' in this sentence identifies a football team participating in a match.