Definitions

1. adjective

covered or lined with a thin layer of something, typically moisture or a substance

“The windows were misty and filmy in the morning dew.”

2. noun

a thin layer of something, typically moisture or a substance, covering a surface

“The filmy coating on the mirror made it difficult to see.”

3. noun

a thin, filmy substance, such as a cloud or a mist

“The filmy clouds obscured the view of the mountain.”