טֵפַח ṭêphach (H2947)

a spread of the hand, i.e. a palm-breadth (not 'span' of the fingers); architecturally, a corbel (as a supporting palm)

1) span, width of the hand, hand breadth 1a) a unit of measurement, measurement of length 2) coping (an architectural term)

from טָפַח (H2946);