打孔
Punch \Punch\, v. t. [imp. & p. p. {Punched}; p. pr. & vb. n. {Punching}.] [From {Punch}, n., a tool; cf. F. poin[,c]onner.] To perforate or stamp with an instrument by pressure, or a blow; as, to punch a hole; to punch ticket. {Punching machine}, or {Punching press}, a machine tool for punching holes in metal or other material; -- called also {punch press}.