The definition of FIL is father-in-law, the father of a wife or husband.
An example of FIL is how you would refer to your father-in-law when texting.
powdered sassafras leaves, used in Creole cooking
Origin of filéAmerican French ; from Fr, past participle of filer, to twist, spin ; from Classical Latin filare ; from filum, a thread: see file
- Shortened form of Filipino.