the.com/tuck

means To push, fold, or gather something snugly into place so it stays put and looks neat.

from From Old English 'tucian,' meaning to torment or pull roughly — a sense that softened over centuries from 'yank' toward 'fold in neatly.' It's related to Dutch 'tokken' and German 'zucken' (to twitch or tug), all pointing back to a Germanic root about sharp pulling. The modern sense of tucking in a shirt or tucking a child into bed is the gentler descendant of what used to mean roughing someone up.