What is the meaning of Sough?

To make a soft rustling or murmuring sound.

A murmuring sound; rushing, rustling, or whistling sound.

A gentle breeze; a waft; a breath.

A (deep) sigh.

A vague rumour.

A cant or whining mode of speaking, especially in preaching or praying.

A small drain; an adit.

To drain.

Source: wiktionary.org