perforation   (Sound)

The perforation has 3 Senses.

• perforation
• 目打ち, 目打, ミシン目
• a line of small holes for tearing at a particular place
• 特定の場所で破るための小さな穴の列

• perforation
• 穿孔
• a hole made in something; "a perforation of the eardrum"
• 何かで作られた穴

• perforation
• the act of punching a hole (especially a row of holes as for ease of separation)
• 穴をあける行為（特に切り離しが容易なように開けられた穴の列）