牛眼环的英文

• bull eye ring
• bull's-eye ring
• heart shape thimble
• heart shaped thimble
• pear shaped thimble

• 牛:    cattle; ox
• 眼:    eye
• 环:    ring; hoop
• 牛眼环索:    bull rope
• 眼环:    eye splice; eye thimble; iron eye; throat ring