phrasal
1. : to inform against : betray
2. : to turn against (a friend or ally) in anger or hostility : assail
she rounded on him fiercely — Kathleen Freeman
was always rounding on his own side on the eve of victory — L.B.Nicolson
phrasal
1. : to inform against : betray
2. : to turn against (a friend or ally) in anger or hostility : assail
she rounded on him fiercely — Kathleen Freeman
was always rounding on his own side on the eve of victory — L.B.Nicolson
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012