MEANING:
Noun: premiere, first night, opening, etc. ( as in movies or theater).
Ensi-ilta appears in our example in the plural form, ensi-illat (”premieres”).
The hyphen in ensi-ilta is there to avoid creating an apparent doubling of the same vowel in the middle of the compound word.
DERIVED FROM:
Ensi-ilta comes from ensi– (“first”) + ilta (“night”).
EXTRA CREDIT:
Slang or spoken Finnish for ensi-ilta is enskari.