椎间盘

intervertebral disk

a hammer

spine

between / among / within a definite time or space / room / section of a room or lateral space between two pairs of pillars / classifier for rooms

gap / to separate / to thin out (seedlings) / to sow discontent

plate / dish / tray / board / hard drive (computing) / to build / to coil / to check / to examine / to transfer (property) / to make over / classifier for food: dish, helping / to coil / classifier for coils of wire / classifier for games of chess

intervertebral disk

herniated lumbar disk

slipped disk / vertebral herniation / prolapsed disk