Pushing the start button and sticking at it (8,2)

'pushing' is the definition.
The answer and definition can be both to do with motion as well as being present participle verbs.
Perhaps there's an association between them I don't understand?

'start button and sticking at it' is the wordplay.
I cannot really see how this works, but
'start' could be 'go' (synonyms) and 'go' is found in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is located in the answer.
'at' could be 'in' (synonymous in some cases - eg at school, in school) and 'in' is present in the answer.
'it' could be 'e' ('e' can mean 'electronic' which is similar to 'IT') and 'e' is found within the answer.
This explanation may well be incorrect...

'the' is the link.

Can you help me to learn more?