Life, bird, or water
Avah is a modern spelling variant of Ava. It likely derives from the Latin 'avis' meaning bird, or as a variant of Eve, which is from the Hebrew 'Chawah' meaning life. In some Germanic contexts, it may relate to the element 'aval' meaning strength or power.
Less common today
Avah isn't in the latest US Top 1000. It last peaked at #463 in 2018.
US births per 5-year period, 1990βpresent (SSA data).