1. A radioactive element of the alkali-metal group discovered as a disintegration product of actinium
   - francium, Fr

Type of: metal, metallic element

• flycatcher
• flycatching warbler
• flyer
• flyfish
• flying
• flying bird
• flying boat
• flying bomb
• flying bridge
• flying buttress
• flying carpet
• flying cat
• flying colors
• flying colours
• flying dragon
• flying drainpipe
• Flying Dutchman
• flying field
• flying fish
• flying fox
• flying gecko
• flying gurnard
• flying jib
• flying lemur
• flying lizard