Dumfries 1760 Marriage

[Neale1961]

Help requested for the underlined word, please. Is it an occupation or a place name?

[goldie61]

It looks like 'Tidewaiter"

From the dictionary:
tidewaiter |ˈtīdˌwātər|
noun historical
a customs officer who boarded ships on their arrival to enforce the customs regulations.

[Neale1961]

Thanks Goldie. I could make out the "waiter" bit,  but could not make sense of the first part.
He might have been working on the river.