Penyweight or Pennyweight: How To spell?
The word Penyweight is misspelled against Pennyweight, a noun meaning "A troy weight containing twenty-four grains, or the twentieth part of an ounce; as, a pennyweight of gold or of arsenic. It was anciently the weight of a silver penny, whence the name."
Pennyweight has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings pe & yweight which should not be misspelled with single 'N'
Wrong Spelling:  pe-n-yweight  Correct Spelling:  pe-nn-yweight 
Find more wrongly spelled words of Pennyweight to spell it well.