Meaning of “boosting cat food from someone”

Question

In the 'The Panic in Needle Park' movie, one of the actors tell someone the following on the phone:

No, man. I didn't boost any cat food from you.

What does it mean? It doesn't seem to be a very common expression either.

Answer 1

As cornbread ninja says, boost is to 'steal'. Cat food is, according to Urban Dictionary option 6 is 'crack cocaine'.

So, the overall meaning is:

No, man. I didn't steal any crack from you.

Answer 2

To boost something means to steal it.

Slang . to engage in stealing, especially shoplifting.