get onto

Short definition from Wiktionary

Verb

1. 1
   To contact a person or organisation about a particular matter.
2. 2
   To connect, especially to the Internet or a network.
3. 3
   To scold someone; to pressure someone; to criticize someone.
4. 4
   To introduce someone to something.
5. 5
   To take a look at someone or something.
6. 6
   To believe or suspect something; to understand or come to understand something; to realize something.
7. 7
   Used other than figuratively or idiomatically: see get, onto.