Frithstol or Frithstool: How To spell?

The word Frithstol is misspelled against Frithstool, a noun meaning "A seat in churches near the altar, to which offenders formerly fled for sanctuary."

Frithstool has double "oo" is mispronounced as "o"
Remember double 'OO' in between the strings frithst & l which should not be misspelled with single 'O'
Wrong Spelling:  frithst-o-l 
Correct Spelling:  frithst-oo-l 
Find more incorrect spellings of Frithstool to spell right way.

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