Where does this definition of on the ball come from?
This entry for on the ball is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is on the ball a noun, verb, or something else?
In this entry, on the ball is tagged as 2adv..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.