grandmother's footsteps
plural noun
treated as sing.
- Brit. a children's game in which one stands with their back to the others, who creep up with the aim of touching the lone child on the back without being seen to move whenever he or she unexpectedly turns around〈英〉奶奶走步游戏（一种儿童游戏, 玩时一人背对他人, 其他人用手触摸其背部, 在移步时不能被突然转身的他或她看见）。