Definitions

1. noun

a muscle or group of muscles in the back of the thigh, especially those involved in bending the knee

“He suffered a hamstring injury during the game and was unable to continue playing.”

2. verb

to weaken or injure the muscles in the back of the thigh, especially those involved in bending the knee

“She hamstrung her opponent by tackling her at the knees and causing a hamstring injury.”

3. verb

to weaken or destroy the effectiveness or power of (something)

“The new law hamstrung the company’s ability to expand into new markets.”