Plural of caph, the eleventh letter of the Hebrew alphabet (also called kaph).
From Hebrew kaph, meaning 'palm of the hand,' because the letter's original shape resembled an open palm. The spelling 'caph' reflects older English transliteration conventions of Hebrew letters.
The Hebrew letter kaph actually shows how ancient alphabets came from pictures—the symbol originally looked like a hand, just like how Egyptian hieroglyphic 'A' came from a drawing of an eagle!
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