Strong's #3712: orguia (pronounced org-wee-ah')
from 3713; a stretch of the arms, i.e. a fathom:--fathom.
Thayer's Greek Lexicon:
̓́
orguia
1) fathom, the distance across the breast from the tip of one middle finger to the tip of the other when the arms are outstretched, 5 to 6 feet (2 m)
Part of Speech: noun feminine
Relation: from G3713
Usage:
This word is used 2 times:
Acts 27:28: "sounded, and found it twenty fathoms: and when they had gone a little further, they sounded"
Acts 27:28: "again, and found it fifteen fathoms."