- Latin caruncula ("a little piece of flesh"). (Wiktionary)
“Lateral to the caruncula is a slight semilunar fold of conjunctiva, the concavity of which is directed toward the cornea; it is called the plica semilunaris.”
“If we step on shore, the ‘Charadrius caruncula’, a species of plover, a most plaguy sort of “public-spirited individual”, follows you, flying overhead, and is most persevering in its attempts to give fair warning to all the animals within hearing to flee from the approaching danger.”
“Forsitan in quibusdam populis localis quoque causa existit; caruncula immoderate crescente, amputationis necessitas exurgit.”
“The caruncula lacrimalis is a small, reddish, conical-shaped body, situated at the medial palpebral commissure, and filling up the lacus lacrimalis.”
“It then passes to the medial angle of the eye, and supplies the skin of the eyelids and side of the nose, the conjunctiva, lacrimal sac, and caruncula lacrimalis.”
“At the medial commissure (Fig. 1205) are the caruncula lacrimalis and the plica semilunaris.”
“Mr. Bowman found that by slitting up the inferior punctum and canaliculus as far as the caruncula, several advantages were gained: -- (1.)”
“The caruncula lachrymalis is a small glandular body situated at the internal commissure of each eye.”
“(caruncula gutturalis Linnaei) a white spot often, if not always, of a foot diameter, on the hinder part of the buttocks round the tail; its gait a trot, and attended with a rattling of the hoofs; but distinguished from that decisively by its horns, which are not palmated, but round and pointed.”
“Monsieur flattered himself that he might by means of laughter squeeze or express the tears required from the well-known meibomian glands, the caruncula, &c., and might thus piratically provide himself with surreptitious rain;  but in that case, he must remind him that he would no more win the day with any such secretions than he could carry to account a course of sneezes or wilfully blowing his nose; a channel into which it was well known that very many tears, far more than were now wanted, flowed out of the eyes through the nasal duct; more indeed by a good deal than were ever known to flow downwards to the bottom of most pews at a funeral sermon.”
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I only started dog-earing 2/5 of the way through, so I'll have to re-read at some point in order to complete this list.
Words for things both tangible and nonanthropic
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