Wiktionary
get stuck into
vb. 1 (context UK Australia NZ English) Get busy with; become occupied with; become immersed in. 2 (context UK English) To start eating. 3 (context Australia English) To criticise someone; tell off; to get angry at; to attack.
Usage examples of "get stuck into".
But knowing dear Adrienne, she'll get stuck into the booze the minute she gets there, and will quite probably be entirely potted before we even get to the ceremony.
We have to cross several rivers where there's leeches thick as pencils that get stuck into what little blood we've got left.
What say you to these charges and the other seventy-five I have yet to get stuck into?
That would give us three of the four rotor settings and then we'd get stuck into Shark.