Probably akin to the base of akmen ("acid"); keen; by analogy, rapid -- sharp, swift.

see GREEK akmen

ὀξεῖα (oxeia) − 2 Occurrences

ὀξεῖαν (oxeian) − 1 Occurrence

ὀξεῖς (oxeis) − 1 Occurrence

ὀξύ (oxu) − 4 Occurrences