This is the 363rd most frequent Italian word.
lasciare
"Lasciare" means "to leave" or "to let" in English.
In this context, 'lasciare' means 'to leave' or 'to depart from' a place or event.
Ho dovuto lasciare la festa presto.
I had to leave the party early.
Here, 'lasciare' is used to mean 'to leave' or 'to place an object' somewhere.
Puoi lasciare il libro sul tavolo?
Can you leave the book on the table?
In this usage, 'lasciare' refers to 'not completing' or 'leaving something in a particular state, unfinished'.