Definition of "FL"

FL

noun
plural FLs
1. Abbreviation of foreign language.
2. (aviation) Abbreviation of flight level.
3. (slang, now chiefly historical) Abbreviation of French letter.
  Quotations
  ‘Well, what did he recommend? Those effells are a pain in the neck, only for bachelors.’
  1954, Doris Lessing, A Proper Marriage, HarperPerennial, published 1995, page 41
  Used and discarded Fls–French letters–floated in the slime, little opaque vessels carrying human seed into oblivion.
  2005, Shilpa Agarwal, Haunting Bombay
  You could buy FLs quietly in chemists' shops and often in barber shops.
  2012, Ian McCall, Going Going Gone, page 94
proper noun
1. Florida, a state of the United States of America.
2. Flevoland, a province of the Netherlands.