טֵפַחṭêphach

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

Pronunciation: tay'-fakh · Hebrew/Aramaic (Old Testament) · H2947

Meanings

1. a span, hand-breadth

2. coping

1. a span, hand-breadth (1 Kings 7:26; 2 Chronicles 4:5; Psalms 39:6)

2. architectural term, perhaps coping (1 Kings 7:9)

Same root

טָפַחṭâphach · H2946to flatten out or extend (as a tent); figuratively, to nurse achild (as promotive of growth);
טֹפַחṭôphach · H2948{a spread of the hand, i.e. a palm-breadth (not 'span' of the fingers); architecturally, a corbel (as a supporting palm)}

Where it appears

Appears 4 times in the Bible.

1 Kings 7:9 From foundation to eaves, all these buildings were built from huge blocks of high-quality stone, cut with saws and trimmed to exact measure on all sides.
1 Kings 7:26 The walls of the Sea were about three inches thick, and its rim flared out like a cup and resembled a water lily blossom. It could hold about 11,000 gallons of water.
2 Chronicles 4:5 The walls of the Sea were about three inches thick, and its rim flared out like a cup and resembled a water lily blossom. It could hold about 16,500 gallons of water.
Psalms 39:5 You have made my life no longer than the width of my hand. My entire lifetime is just a moment to you; at best, each of us is but a breath.” Interlude

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).