Possible Clues:

• Put an end to - whisky spelt thus?
• Put an end to; whisky
• Queer whisky
• One would not get the Irish to 4 across of this
• Put an end to, say rumour
• A drink; crush
• Cut - wedge - whisky
• Tax church north of the border
• Put down - whisky
• Whisky (not whiskey!)