Henry George Liddell, Robert Scott, A Greek-English Lexicon

A.“ἐκοίληνα” Hdt.2.73; Att. “ἐκοίλα_να” Th.4.100:—Med., Ep. aor. “κοιλήνατο” Nonn.D.12.332:—Pass., aor. “ἐκοιλάνθην” Hp.Epid.7.52: pf. “κεκοίλασμαι” Id.Medic.11; -αμμαι EM233.51: (κοῖλος):—hollow, scoop out, “τὸ ᾠόν” Hdt. l.c.; “πέτρην κοιλαίνει ῥανὶς ὕδατος ἐνδελεχείῃ” Choeril.10; κ. δένδρα, of the woodpecker, Arist.HA614b14; κ. χῶμα, i.e. dig a grave, Theoc.23.43; “κ. τὰς χεῖρας” Ath.11.479a; “κ. ὄμματα” APl.4.142, cf. Opp.H.4.19:—Pass., to be or become hollow, ἔντοσθε, of ulcers, Hp.Medic.l.c.; “ὀφθαλμοὶ κ.” Id.Acut.30; “κ. κατὰ τὸν κενεῶνα καὶ κατὰ τὰ ἄρθρα” Id.Art.52; of poor timber, go into holes, Thphr.HP3.12.1.

II. make empty, make poor, Lyc.772.

2. allow to lapse, of payments, BGU1156.18 (i B.C.), PSI4.287.16 (iv A.D.), etc.