Focus on the pronunciation of staple
English definition of “staple”
/ˈsteɪ·pəl/ n [C] (WIRE)
› a short, thin, U-shaped piece of wire with ends that bend to fasten sheets of paper together: Put a staple in the upper left-hand corner. › A staple is also a small, thick, U-shaped piece of metal with sharp ends that is hammered into a surface to hold something in place.