معنی کلمه :‌ shrilly

Somewhat shrill.

In a shrill manner; acutely; with a sharp sound or voice.

A phenol metameric with phloroglucin, obtained by the distillation of gallic acid as a poisonous white crystalline substance having acid properties, and hence called also pyrogallic acid. It is a strong reducer, and is used as a developer in photography and in the production of certain dyes.