One who hatches eggs, especially in commercial or scientific contexts, or a device used for incubating eggs. Can also refer to someone who devises or originates plans or schemes.
From 'hatch' (from Old English 'hæccan', to produce young from eggs) + '-er' (agent suffix). The extended meaning of 'devising plans' comes from the metaphor of 'hatching' ideas like eggs.
The word 'hatcher' beautifully captures how both eggs and ideas go through the same process - a period of protected incubation followed by the dramatic moment when something new breaks forth into the world!
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