Scottish port employing lawyers regularly (3)
I believe the answer is:
ayr
'scottish port' is the definition.
(Ayr is a Scottish port town)
'lawyers regularly' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
The alternate letters of 'lawyers' are 'AYR'.
'employing' is the link.
(Other definitions for ayr that I've seen before include "Scottish town, port and racecourse" , "Town on Firth of Clyde" , "Town in Strathclyde" , "Scots. town; sounds like song" , "Scots port on Firth of Clyde" .)