1. Having abnormal sagging of the spine (especially in horses)
   - dipped, lordotic, swayback

See also: unfit

• filmy
• filmy fern
• filo
• filose
• Filoviridae
• filovirus
• fils
• filter
• filter bed
• filter coffee
• filter out
• filter paper
• filter tip
• filter-tipped
• filter-tipped cigarette
• filth
• filthily
• filthiness
• filthy
• filthy lucre
• filtrate
• filtration
• filtration surgery
• filum
• fimbria