flowers-of-an-hour
- n annual weedy herb with ephemeral yellow purple-eyed flowers; Old World tropics; naturalized as a weed in North America
flowers of zinc
- n oxide of zinc; a white powder used as a pigment or in cosmetics or glass or inks and in zinc ointment
floxuridine
- n antineoplastic drug used to treat some cancers; can cause loss of hair
floyd bennett
- n United States aviator who (with Richard E. Byrd) piloted the first flight over the North Pole (1890-1928)
fluctuation
- n a wave motion
the fluctuations of the sea - n an instance of change; the rate or magnitude of change
- n the quality of being unsteady and subject to changes
he kept a record of price fluctuations
flue
- n flat bladelike projection on the arm of an anchor
- n organ pipe whose tone is produced by air passing across the sharp edge of a fissure or lip
- n a conduit to carry off smoke