Sentence:  All this time, every night, and sometimes most of each night, the <WSD>hooning</WSD> whistling of the Room was intolerable. It was as if an intelligence there knew that steps were being taken against it, and piped and <WSD>hooned</WSD> in a sort of mad, mocking contempt. 
Meaning of the word marked with <WSD> tags:  To make a hooting or howling sound.