Answer: incubate

AnswerCrossword Clue
INCUBATEDevelop
INCUBATEBrood.
INCUBATEHatch artificially
INCUBATEDevelop slowly
INCUBATESit on, maybe
INCUBATESit on eggs
INCUBATEDevelop, as an egg
INCUBATETake form
INCUBATENurture, as a startup
incubateto warm eggs for hatching
incubateto hatch (eggs) by warmth