FATHOM
fath'-um (~orguia):
The literal meaning is the length of the outstretched arms, and it was regarded as equal to 4 cubits, or about 6 feet. (Acts 27:28).
See WEIGHTS AND MEASURES.
Bibliography Information Orr, James, M.A., D.D. General Editor. "Entry for 'FATHOM'". "International Standard Bible Encyclopedia". 1915.