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achilary

American  
[uh-kahy-luh-ree] / əˈkaɪ lə ri /
Older Spelling, acheilary

adjective

Botany.
  1. having no labellum or lip, or one that is undeveloped, as in the flower of certain orchids.


Etymology

Origin of achilary

a- 6 + chil(o)- 1 + -ary