We found 1 definitions of be on the ball from 1 different sources.
Verb |
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be on the ball - be well-informed | ||
know the score, be with it, know what's going on, know what's what | ||
know be familiar or acquainted with a person or an object; "She doesn't know this composer"; "Do you know my sister?"; "We know this movie"; "I know him under a different name"; "This flower is known as a Peruvian Lily" |