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releaser

[ri-lee-ser]

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noun

a person or thing that releases.

Ethology. a key stimulus, as a sound, odor, moving shape, or patch of color, that elicits a predictable behavioral response in an animal.

Origin of releaser

1425–75; late Middle English. See release, -er¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for releaser

Historical Examples of releaser

One day she sang of Death the releaser, and Ruark thought, ''Tis come!
The Shaving of Shagpat, Complete
George Meredith
If such music-making is ever to become accepted, then I long for Death the Releaser.
Ivory Apes and Peacocks
James Huneker