Girl cross with terminal to boot (7)
I believe the answer is:
bridget
'girl' is the definition.
'cross with terminal to boot' is the wordplay.
I cannot quite see how this works, but
'cross' could be 'bridge' (bridging is a kind of crossing) and 'bridge' is present in the answer.
A single letter 't' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for bridget that I've seen before include "Saintly woman" , "Saint" , "Miss Jones the diarist" , "Girl" .)