noun. A threadlike anatomical structure; a filament.

noun. A hair-like process on the radius of the down-feathers in some birds.

noun. A thread; a filament, fibril, or fine fiber; a filar structure.

noun. In musical notation, the stem or tail of a note.

noun. a filamentous anatomical structure

noun. a threadlike structure (as a chainlike series of cells)

"The lady at the counter referred to it as a filum which is what Kim Hill always says."

fila spermatica  filum terminale  

fila