spawn

1. (of a fish, frog, mollusc, crustacean, etc.) release or deposit eggs.

   the fish spawn among fine-leaved plants

2. (of a person) produce (offspring).

   why had she married a man who could spawn a boy like that?

1. the eggs of fish, frogs, etc.

   the fish covers its spawn with gravel

2. the product or offspring of a person or place.

   the spawn of Satan

3. the mycelium of a fungus, especially a cultivated mushroom.

   a supplier of spawn for shiitake mushrooms

late Middle English: shortening of Anglo-Norman French espaundre ‘to shed roe’, variant of Old French espandre ‘pour out’, from Latin expandere ‘expand’.