expression, ichidan verb
cry until one runs out of tears
Used when someone has cried so much that tears no longer come, often implying deep sorrow or exhaustion.
彼女は涙が枯れるまで泣いた。
She cried until she ran out of tears.
Compound of 涙 (tears) + が (subject marker) + 枯れる (to dry up). Literally 'tears dry up'.