Hornbok or Hornbook: How To spell?
The word Hornbok is misspelled against Hornbook, a noun meaning "A book containing the rudiments of any science or branch of knowledge; a manual; a handbook."
Hornbook has double "oo" is mispronounced as "o"Remember double 'OO' in between the strings hornb & k which should not be misspelled with single 'O'
Wrong Spelling:  hornb-o-k  Correct Spelling:  hornb-oo-k 
Find more incorrect spellings of Hornbook to spell right way.