coping, hand-breadth

Boyd’s Bible Dictionary:

The top and projecting layer of a wall (1 Kings 7:9).

Strong’s Dictionary of Hebrew Words:

Number:
2947 (find all occurrences in KJV Bible)
Transliteration:
tephach
Phonic:
tay’-fakh
Meaning:
from 2946; a spread of the hand, i.e. a palm- breadth (not "span" of the fingers); architecturally, a corbel (as a supporting palm)
KJV Usage:
coping, hand-breadth