I. noun Etymology: 8tip Date: 1901 warning , tip , a telltale sign, II. noun Etymology: 6tip Date: 1922 the act or an instance of putting the ball in play in basketball by a jump ball
TIP-OFF
Meaning of TIP-OFF in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012