This is the 1905th most frequent Turkish word.
ilki
"The first one."
The word 'ilki' here refers to 'the first one' in a series of items (in this case, movies).
Dün akşam izlediğim filmlerden ilki çok etkileyiciydi.
The first one of the movies I watched last night was very impactful.
'Ilki' is used here to specify the first item ('a book') in a set of presents.
Bugün aldığım hediyelerden ilki bir kitap oldu.
The first one of the presents I received today was a book.
'Ilki' signifies 'the first one' referring to a specific project from multiple new projects.