dune 
(dn, dyn)
(dn, dyn)n.
A hill or ridge of wind-blown sand.
[French, from Old French, from Middle Dutch dūne; see dheuə- in the Appendix of Indo-European roots.]
- fortitude
- fortitudinous
- Fort-Lamy
- Fort-Lamy
- Fort Lauderdale
- Fort Lee
- Fort McMurray
- Fort Myers
- Fort Nelson
- fortnight
- fortnightly
- for/to all intents and purposes
- Fortran
- fortress
- Fort Smith
- fortuitous
- fortuitously
- fortuitousness
- fortuity
- Fortuna
- fortunate
- fortunately
- fortunateness
- fortune
- fortune cookie