1.
end of a street or corridor; T-junction
the point where a road, hallway, or path ends and you must turn left or right
Forms
突く (to thrust, poke) + 当たる (to hit) → hitting a wall/end
突き当たる (to reach the end, to hit)
Usage
Commonly used when giving directions. Indicates where a path ends or where one must turn.
Watch out
突き当たり is where the road or corridor you are on ends, usually at a T-junction, so you turn left or right there. 行き止まり is a dead end with no way through.