This is the 679th most frequent Italian word.
mila
The Italian word "mila" means "thousands."
In this sentence, 'mila' is used as a unit of thousand in numbers, specifically indicating two thousand (2000) euros.
Ho comprato una casa da due mila euro.
I bought a house for two thousand euros.
Here, 'cinquemila' combines 'cinque' (five) with 'mila' to represent five thousand participants.
La maratona di quest'anno ha visto la partecipazione di cinquemila persone.
This year's marathon saw the participation of five thousand people.
The phrase 'decine di mila' translates as 'tens of thousands,' illustrating 'mila' in a pluralized, generalized form.