Trusing or Trussing: How To spell?
The word Trusing is misspelled against Trussing, a noun meaning "The act of a hawk, or other bird of prey, in seizing its quarry, and soaring with it into air."
Trussing has double "ss" is mispronounced as "s"Remember double 'SS' in between the strings tru & ing which should not be misspelled with single 'S'
Wrong Spelling:  tru-s-ing  Correct Spelling:  tru-ss-ing 
Check more misspelled words of Trussing to spell it correct.