waw

Waw (wāw "hook") is the sixth letter of the Semitic abjads, including
Phoenician wāw 𐤅,
Aramaic waw 𐡅,
Hebrew vav ו‎,
Syriac waw ܘ
and Arabic wāw و‎ (sixth in abjadi order; 27th in modern Arabic order). It is also related to the Ancient North Arabian 𐪅‎‎‎, South Arabian 𐩥, and Ge'ez ወ.
It represents the consonant [w] in classical Hebrew, and [v] in modern Hebrew, as well as the vowels and [o]. In text with niqqud, a dot is added to the left or on top of the letter to indicate, respectively, the two vowel pronunciations.
It is the origin of Greek Ϝ (digamma) and Υ (upsilon); Latin F, V and later the derived Y, U and W; and the also derived Cyrillic У and Ѵ.

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