δάκνω
Etym. Root ΔΑΚ
I. "to bite", of dogs, Il.; στόμιον δ. "to champ" the bit, Aesch.; χεῖλος ὀδοῦσι δακών, as a mark of determination, Tyrtae.; δ. ἑαυτόν "to bite" one's lips for fear of laughing, Ar.
II. metaph. of pungent smoke and dust, "to sting or prick" the eyes, Ar.
III. of the mind, "to bite or sting", δάκε φρένας μῦθος Il.; ἔδακε ἡ λύπη Hdt.; so in Trag.: —Pass., of love, δηχθεῖσα Eur.; καρδίαν δέδηγμαι "I was stung, vexed" at heart, Ar.