Strong’s Greek
G4083 — pechus
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
πῆχυς
pechus — pronounced pay'-khoos
of uncertain affinity; the fore-arm, i.e. (as a measure) a cubit:--cubit.
4 occurrences in the KJV.
Matthew 6:27
Which of you by taking thought can add one cubit unto his stature?
Luke 12:25
And which of you with taking thought can add to his stature one cubit?
John 21:8
And the other disciples came in a little ship; (for they were not far from land, but as it were two hundred cubits,) dragging the net with fishes.
Revelation 21:17
And he measured the wall thereof, an hundred and forty and four cubits, according to the measure of a man, that is, of the angel.