Meaning of “get down to sth” - Learner’s Dictionary

get down to sth

phrasal verb with get us uk /ɡet/ verb present participle getting, past tense got, past participle got, US gotten

B2 to start doing something seriously and with a lot of attention and effort:

Before we get down to business, I'd like to thank you all for coming today.

(Definition of “get down to sth” from the Cambridge Learner’s Dictionary © Cambridge University Press)