κοιλότης, ητος, ἡ,
hollowness: a hollow, τῆς γῆς [[ 4th c.BC: Aristoteles Philosophus “Meteorologica” 354a12, compare “HA” 529a21, 4th-3rd c.BC: Theophrastus Philosophus “de Ventis” 30; κ. ὀρέων LXX.Wis.17.19 ] LXX+4th c.BC+]; κ. ἐν ῥινί, ={σιμότης}, [[ 4th c.AD: Themistius Sophista “in Aristotelis Physica paraphrasis - pars” 42.3. ] Refs 4th c.AD+]
__II concavity, [[ 4th c.BC: Aristoteles Philosophus “Metaphysica” 1025b33 ] Refs 4th c.BC+]; concave moulding in architecture, [[ 6th c.AD: Procopius Caesariensis Historicus “Ecphr.” p.157 5th c.BC: Bacchylides Lyricus (_plural_). ] Refs 5th c.BC+]
__III metaphorically, shortage of cash, [[ 1st c.BC: Philodemus Philosophus “περὶ οἰκονομίας” p.71J. ] Refs 1st c.BC+]