The etymology of the verb to scotch is unclear. Here is the origin note from Oxford Dictionaries:
early 17th century (as a noun): of unknown origin; perhaps related to skate1. The sense 'render temporarily harmless' is based on an emendation of Shakespeare's Macbeth iii. ii. 13 as ‘We have scotch'd the snake, not kill'd it’, originally understood as a use of scotch2; the sense 'put an end to' (early 19th century) results from the influence on this of the notion of wedging or blocking something so as to render it inoperative
In contemporary English are there any other common uses of scotch? I'm interested in whether there used to be wider use of the verb beyond just that relating to rumours.