1. bissextile year in the Gregorian calendar: any year divisible by 4 except centenary years divisible by 400
  2. bissextile day the name of the day that is added during a leap year
  3. pistoleer someone armed with a pistol (especially a soldier so armed)
  4. sextillion the number that is represented as a one followed by 21 zeros
  5. Biscutella genus of Eurasian herbs and small shrubs: buckler mustard
  6. blastular of or relating to a blastula
  7. extoller someone who communicates high praise
  8. Hibiscus tiliaceus shrubby tree widely distributed along tropical shores
  9. peristylar having columniation completely circling an area of the structure
  10. Koestler British writer (born in Hungary) who wrote a novel exposing the Stalinist purges during the 1930s (1905-1983)
  11. saxatile growing on or living among rocks
  12. Kastler French physicist (1902-1984)
  13. sixthly in the sixth place
  14. scene-stealer an actor who draws more attention than other actors in the same scene
  15. basket-handle arch a round arch whose inner curve is drawn with circles having three centers
  16. Belize dollar the basic unit of money in Belize
  17. fiscal year any accounting period of 12 months
  18. sixty-three being three more than sixty
  19. distiller someone who distills alcoholic liquors
  20. basic slag slag produced in making steel

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