Ostleres or Ostleress: How To spell?
The word Ostleres is misspelled against Ostleress, a noun meaning "A female ostler."
Ostleress has double 'ss' in the end mispronounced as 's'Remember double 'SS' appears in the end of this word which should not be misspelled with single 'S'
Wrong Spelling:  ostlere-s  Correct Spelling:  ostlere-ss 
Explore spell check of Ostleress to spell without errors.