laminectomy
noun [ C or U ] medical specialized uk/læm.ɪˈnek.tə.mi/ us/læm.əˈnek.tə.mi/
椎板切除术
an operation to remove the lamina (= one of the two curved parts of one of the bones in the back)
Laminectomy is sometimes done to take pressure off spinal nerves. 有时候椎板切除是为了降低脊椎神经受到的压力。