spikes placed at the top of a wall to repel thieves 忍び返し [しのびがえし] /(n) bamboo wall-top spikes (or wood, iron)/spikes placed at the top of a wall to repel thieves/ ------- 忍返し [しのびがえし] /(n) bamboo wall-top spikes (or wood, iron)/spikes placed at the top of a wall to repel thieves/ |