INCUBATE
Source: 566, 567
incubate. Incubate, v.i. to sit upon eggs, brood, hatch
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In″cu‐bate (?), v. i. & t. [imp. & p. p. Incubated (?); p. pr. & vb. n. Incubating (?).] [[L. incubatus, p. p. incubare to lie on; pref. in- in, on + cubare to lie down. Cf. Cubit, Incumbent.]] To sit, as on eggs for hatching; to brood; to brood upon, or keep warm, as eggs, for the purpose of hatching.