supercilium

Borrowed from Latin supercilium (“eyebrow; brow, ridge; pride, arrogance”).

• (Received Pronunciation) IPA^(key): /ˌs(j)uː.pəˈsɪl.i.əm/
• (General American) IPA^(key): /ˌsu.pɚˈsɪl.i.əm/
• Rhymes: -ɪliəm

supercilium (plural supercilia)

1. (anatomy, rare) The eyebrow (arch of hair above each eye).
   1. The region of the eyebrows.
   2. (anatomy) The overhanging margin of a bony cavity (as of the acetabulum).
   3. (zoology) A superciliary marking or structure, especially in a bird.
2. (architecture, classical) The narrow fillet above the cymatium of a cornice.
   1. A fillet above and below the scotia of an Attic base.
   2. The lintel or transverse part of a door frame.
3. (rare, humorous) Superciliousness, haughtiness; an instance of this, a supercilious demeanor.

• “supercilium”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “supercilium”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

From super- (“above, over”) +‎ cilium (“an eyelid”).

• (Classical Latin) IPA^(key): [sʊ.pɛrˈkɪ.li.ũː]
• (modern Italianate Ecclesiastical) IPA^(key): [su.perˈt͡ʃiː.li.um]

supercilium n (genitive superciliī or supercilī); second declension

1. (anatomy, usually in the plural) The eyebrow.
   1. The prominent part of a thing, the brow, ridge, summit.
2. The nod, the will.
3. Pride, haughtiness, arrogance, sternness, superciliousness.

Second-declension noun (neuter).

¹Found in older Latin (until the Augustan Age).

• “supercilium”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “supercilium”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• "supercilium", in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition with additions by D. P. Carpenterius, Adelungius and others, edited by Léopold Favre, 1883–1887)
• supercilium in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.