unctuous แปลว่า

"It is, of the one part, / A humide exhalation, vvhich vve call / Materia liquida, or the Vnctuous VVater; […]"

"[H]e ſeveral time obſerved, that cutting a Cheeſe in tvvo, vvhen they vvere any thing near the Equinoctial, that moſt part of it vvould be very dry and brittle, and ſeem'd as if it vvere ſpoil'd: VVhereas the Parts about the middle vvere ſo fat and ſoft, as if all the unctuous Parts that vvere vvanting in the dried Portion of the Cheeſe had retired thither, and vvas betvveen Cream and Cheeſe."

"This tongue [of the pangolin] is round, extremely red, and covered vvith an unctuous and ſlimy liquor, vvhich gives it a ſhining hue. VVhen the pangolin, therefore, approaches an ant-hill, for theſe are the inſects on vvhich it chiefly feeds, it lies dovvn near it, concealing as much as poſſible the place of its retreat, and ſtretching out its long tongue among the ants, keeps it for ſome time quite immovable. Theſe little animals, allured by its appearance, and the unctuous ſubſtance vvith vvhich it is ſmeared, inſtantly gather upon it in great numbers; and vvhen the pangolin ſuppoſes a ſufficiency, it quickly vvithdravvs the tongue, and ſvvallovvs them at once."