What is the meaning of Catch_up?

To pick up suddenly.

To entangle.

To be brought up to date with news.

To bring (someone) up to date with the news.

To reach something that had been ahead.

To compensate for or make up a deficiency.

To finally overtake (someone or something) after a long period of approaching (them or it).

Alternative spelling of catch-up

Source: wiktionary.org