(physiology) A minuscule structure inside the kidney, involved in the regulation of the activity of each nephron.

(idiomatic) A bad person, especially one who has a corrupting influence on others: a bad apple.

Alternative form of apple aphid

(obsolete) eggplant

(obsolete) A male servant of a prostitute.

plural of apple-squire

(US, symbolically) Wholesomeness and traditional (American) values. / (politics, US) Something that cannot be questioned because it appeals to universally-held beliefs or values.

(US, symbolically) Patriotism and traditional US values. / (US politics) Something that cannot be questioned because it appeals to patriotism and widely-held American traditional values.

A vine or low shrub native to Australia, Billardiera scandens in the taxonomic family Pittosporaceae, which bears edible fruits said to taste like stewed apples.

(sciences) Science as applied to practical problems (applications), such as engineering and the advancement of technology.