To abut in turn or opposition; to border or touch something while also being bordered by it in return.
From 'counter-' (against, opposite) plus 'abut' (from Old French 'abouter', to border on or touch). This is a technical architectural or legal term combining these elements to describe mutual bordering.
This is architectural jargon you'd find in property deeds—'counterabutting properties' means two pieces of land that border each other mutually, touching along the same line from both directions!
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