lay a finger on
Also, put a finger on. Barely touch, as in You'd better not lay a finger on those documents! or If you lay a finger on me, I'll sue. This expression is nearly always used as a prohibition. [Mid-1800s] Also see put one's finger on.
Words nearby lay a finger on
laxation,
laxative,
laxity,
laxness,
lay,
lay a finger on,
lay a wager,
lay about one,
lay an egg,
lay analyst,
lay aside