उषस्

• (Vedic) IPA^(key): /u.ʂɐ́s/
• (Classical) IPA^(key): /ˈu.ʂɐs̪/

From Proto-Indo-Iranian *Hušā́s (“dawn”), from Proto-Indo-European *h₂éwsōs (“dawn”), which was also personified as a goddess of dawn in Proto-Indo-European religion. Cognate with Avestan 𐬎𐬱𐬀𐬵‎ (ušah), Latin Aurora/aurora, Ancient Greek Ἠώς (Ēṓs)/ἠώς (ēṓs) and possibly Old English Ēostre (whence English Easter).

उषस् • (uṣás) stem, f

1. morning light, dawn, morning (personified as the daughter of heaven and sister of the Ādityas and the night)
   • c. 1700 BCE – 1200 BCE, Ṛgveda 1.6.3:

     केतुं कृण्वन्नकेतवे पेशो मर्या अपेशसे ।
     सम्उषद्भिर्अजायथाः ॥

     ketuṃ kṛṇvannaketave peśo maryā apeśase .
     samuṣadbhirajāyathāḥ .

     Thou, making light where no light was, and form, O men: where form was not,
     Wast born together with the Dawns.

2. the evening light
3. (in the dual) night and morning
   • c. 1700 BCE – 1200 BCE, Ṛgveda 3.4.6:

     आ भन्दमाने उषसा उपाके उत स्मयेते तन्वा विरूपे ।
     यथा नो मित्रो वरुणो जुजोषदिन्द्रो मरुत्वाँ उत वा महोभिः ॥

     ā bhandamāne uṣasā upāke uta smayete tanvā virūpe .
     yathā no mitro varuṇo jujoṣadindro marutvām̐ uta vā mahobhiḥ .

     Night and Dawn, lauded, hither come together, both smiling, different are their forms in colour,
     That Varuṇa and Mitra may accept us, and Indra, girt by Maruts, with his glories.

उषस् • (uṣás) stem, f

1. Ushas (personified as the daughter of heaven and sister of the Adityas and the night)
   • c. 1700 BCE – 1200 BCE, Ṛgveda 1.48.5:

     आ घा योषेव सूनर्य्उषा याति प्रभुञ्जती ।
     जरयन्ती वृजनं पद्वदीयत उत्पातयति पक्षिणः ॥

     ā ghā yoṣeva sūnaryuṣā yāti prabhuñjatī .
     jarayantī vṛjanaṃ padvadīyata utpātayati pakṣiṇaḥ .

     Like a good matron Uṣas comes carefully tending everything:
     Rousing all life she stirs all creatures that have feet, and makes the birds of air fly up.

2. name of a wife of Bhava or Rudra

उषस् • (uṣas) stem, n

1. daybreak, dawn, twilight

उषस् • (uṣas) stem, n

1. the outer passage of the ear

• Monier Williams (1899), “उषस्”, in A Sanskrit–English Dictionary, […], new edition, Oxford: At the Clarendon Press, →OCLC, page 220/1.
• Mayrhofer, Manfred (1992) Etymologisches Wörterbuch des Altindoarischen [Etymological Dictionary of Old Indo-Aryan]‎ (in German), volume 1, Heidelberg: Carl Winter Universitätsverlag, page 236