This is the 12214th most frequent Polish word.
meczami
"Meczami" means "matches" (plural instrumental form) in English.
Here, 'meczach' (matches) is the instrumental plural form of 'mecz', used to indicate the context of the action.
Po ciężkich meczach zawodnicy odpoczywali w szatni.
After tough matches, the players rested in the locker room.
'Meczach' (matches) appears in the locative plural form due to it being the object of preposition 'o'.
Rozmawiam z kolegami o naszych ulubionych meczach.
I am talking with my friends about our favorite matches.
'Mecze' (matches) here is in the plural nominative case and acts as a direct object in the sentence.