1. North American fern having tall erect pinnate fronds and a few sporogenous pinnae at or near the centre of the fertile fronds
   - interrupted fern

Type of: flowering fern, osmund

• flagrantly
• flagroot
• flagship
• flagstaff
• flagstone
• Flagyl
• flail
• flair
• flak
• flak catcher
• flak jacket
• flake
• flake off
• flake out
• flakey
• flakiness
• flaky
• flam
• flambeau
• flamboyance
• flamboyant
• flamboyant tree
• flamboyantly
• flambé
• flame