Tubing or Tubbing: How To spell?

The word Tubing is misspelled against Tubbing, a noun meaning "A lining of timber or metal around the shaft of a mine; especially, a series of cast-iron cylinders bolted together, used to enable those who sink a shaft to penetrate quicksand, water, etc., with safety."

Tubbing has double "bb" is mispronounced as "b"
Remember double 'BB' in between the strings Tu & ing which should not be misspelled with single 'B'
Wrong Spelling:  Tu-b-ing 
Correct Spelling:  Tu-bb-ing 
Check more misspelled words of Tubbing to spell it correct.

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