1. escalator clause a clause in a contract that provides for an increase or a decrease in wages or prices or benefits etc. depending on certain conditions (as a change in the cost of living index)
  2. osteoclasis treatment of a skeletal deformity by intentionally fracturing a bone
  3. escalator a stairway whose steps move continuously on a circulating belt
  4. osculate kiss
  5. descriptive clause a subordinate clause that does not limit or restrict the meaning of the noun phrase it modifies
  6. Oscillatoriaceae blue green algae
  7. astragalus the bone in the ankle that articulates with the leg bones to form the ankle joint
  8. master class a class given to talented students by an expert
  9. Astragalus large genus of annual or perennial herbs or shrubs of north temperate regions; largest genus in the family Leguminosae
  10. aspergillosis an opportunistic infection by a fungus of the genus Aspergillus; characterized by inflammation and lesions of the ear and other organs
  11. water closet a toilet in Britain
  12. water glass a glass for drinking water
  13. escadrille a small squadron
  14. equilateral having all sides of the same length
  15. osculator someone who kisses
  16. escalate increase in extent or intensity
  17. escalader someone who gains access by the use of ladders
  18. Osmunda regalis large deeply rooted fern of worldwide distribution with upright bipinnate compound tufted fronds
  19. Agaricales typical gilled mushrooms belonging to the subdivision Basidiomycota
  20. relative clause a clause introduced by a relative pronoun