Burowing or Burrowing: How To spell?
The word Burowing is misspelled against Burrowing, which is present continuous of "Burrow"
Burrowing has double "rr" is mispronounced as "r"Remember double 'RR' in between the strings bu & owing which should not be misspelled with single 'R'
Wrong Spelling:  bu-r-owing  Correct Spelling:  bu-rr-owing 
Check more misspelled words of Burrowing to spell it correct.