Bullroarer

A sound that carries further than a shout.

Also known as: Rhombus instrument, Whirled slat

CulturalMusicalStandard profile

Meanings

The slat whirled on a cord to produce a low pulsing sound audible at great distance.

Historically documentedVerified fact
Produces a low pulsing sound carrying over distances a voice cannot reach.
Contexts: History, Music
Historically documentedVerified fact
Low-pitched sound carries further than high-pitched over ground and through vegetation, which is why the instrument works and why it appears independently across several continents.
Contexts: History, Music
Culturally establishedVerified fact
In several traditions its use is restricted and its sound is not to be heard by everyone; the record notes that such restrictions exist and describes only the instrument's acoustics.
Contexts: History, Music

Visual description

A flat slat of wood on a long cord, whirled in a circle to produce a pulsing low tone whose pitch varies with the speed of rotation.

Symmetry: none
Orientation: upright

Confidence

IdentityModerate confidence: Moderate confidence because the identity is documented in encyclopedic references, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but the regional or cultural match to this specific claim is not precise.
Current useModerate confidence: Moderate confidence because the current use is documented in encyclopedic references, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

Sources

The world's writing systems and their notation
Oxford University Press, Cambridge University Press and comparable scholarly editions · retrieved 2026-08-27
Scholarly treatment of scripts not covered by a regional source already registered. Cited for the identity, structure and documented use of a script or a mark. Undeciphered and partly deciphered scripts are recorded as such, and a reading that is contested is stated as contested rather than adopted.

Last reviewed 2026-08-27

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Meanings

The slat whirled on a cord to produce a low pulsing sound audible at great distance.

Historically documentedVerified fact

Produces a low pulsing sound carrying over distances a voice cannot reach.

Contexts: History, Music

Historically documentedVerified fact

Low-pitched sound carries further than high-pitched over ground and through vegetation, which is why the instrument works and why it appears independently across several continents.

Contexts: History, Music

Culturally establishedVerified fact

In several traditions its use is restricted and its sound is not to be heard by everyone; the record notes that such restrictions exist and describes only the instrument's acoustics.

Contexts: History, Music

Confidence

IdentityModerate confidence: Moderate confidence because the identity is documented in encyclopedic references, but only a single source has been found so far.
Historical originLow confidence: Low confidence because the historical origin is documented in encyclopedic references, but only a single source has been found so far, but the regional or cultural match to this specific claim is not precise.
Current useModerate confidence: Moderate confidence because the current use is documented in encyclopedic references, but only a single source has been found so far.
Visual matchModerate confidence: Moderate confidence because the visual match is documented in encyclopedic references, but only a single source has been found so far.

Sources

The world's writing systems and their notation
Oxford University Press, Cambridge University Press and comparable scholarly editions · retrieved 2026-08-27
Scholarly treatment of scripts not covered by a regional source already registered. Cited for the identity, structure and documented use of a script or a mark. Undeciphered and partly deciphered scripts are recorded as such, and a reading that is contested is stated as contested rather than adopted.

Last reviewed 2026-08-27