Squeezed a thousand through Scottish border (7)
I believe the answer is:
tweaked
'squeezed' is the definition.
The definition and answer can be both to do with contact as well as being past participle verbs.
Maybe they are linked in a way I don't understand?
'a thousand through scottish border' is the wordplay.
'thousand' becomes 'K' (synonyms).
'through' is an insertion indicator (inserted letters go through the word).
'scottish border' becomes 'tweed' (I am not sure about this - if you are sure you should believe this answer much more).
'a'+'k'='ak'
'ak' inserted inside 'tweed' is 'TWEAKED'.
Can you help me to learn more?
(Other definitions for tweaked that I've seen before include "altered" , "Slightly adjusted" , "Pinched or twisted - or made fine adjustment" , "changed for the better" , "Fine tuned" .)