З-83

В ЗАТЫЛОК идти, шагать, стоять, строиться и т. п. PrepP Invar adv

(to walk, march, stand, line up etc) in a row, with each person positioned immediately behind another: (in) single file

Indian file in a file one behind the other.

Тропинка была узкая, и нам пришлось идти в затылок. The path was narrow, and we had to walk single rile.