A quiet remark the whole house will hear

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM CORPUS ▪ He dropped to a conspiratorial stage whisper with Margaret: Where is she anyway?

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Stage \Stage\ (st[=a]j), n. [OF. estage, F. ['e]tage, (assumed) LL. staticum, from L. stare to stand. See Stand , and cf. Static .] A floor or story of a house. [Obs.] --Wyclif. An elevated platform on which an orator may speak, a play be performed, ...

WordNet Word definitions in WordNet
n. a loud whisper that can be overheard; on the stage it is heard by the audience but it supposed to be inaudible to the rest of the cast

Wikipedia Word definitions in Wikipedia
Stage Whisper is a double album by Charlotte Gainsbourg , released on December 13, 2011.

Wiktionary Word definitions in Wiktionary
n. (context theater English) A line that is performed on stage as if it were whispered, but is spoken loud enough that the audience can hear. vb. (context theater English) To perform a stage whisper.