What is "filminess"

Usage examples of "filminess".

But the pinkness and whiteness of underskirts and camisoles, the filminess of foundation garments, the rustle about the bustle and the fuss about the bust.

But their unique horror lay in a certain filminess (it made me think of the membrana nictitans in a bird) which, obscuring them as I threw wide the door, seemed to lift as I actually passed the threshold, revealing the eyes in all their brilliant iridescence.