engine, machine / body organ / organization, institute, agency, authority, establishment / facility

organogenesis (formation and development of the organs from embryonic cells)

emotional atmosphere

mechanical / like a machine; systematic / like a machine; robotic

(anatomy) ampulla of Lorenzini

musical comedy, comic opera

Jerusalem artichoke

(medicine, epidemiology) incubation period

a variety of David's peach (Prunus davidiana var. potaninii)

to fail to hear something; to miss / to act as if one didn't hear something; to let a remark slide