Styloid process
In anatomy, a styloid process (from Greek stylos (στῦλος), "pillar"), usually serving as points of attachment for muscles,  refers to the slender, pointed process (protrusion) of:
 temporal bone of the skull - Temporal styloid process
 radius bone of the lower arm - Radial styloid process
 ulna bone of the lower arm - Ulnar styloid process
 Third metacarpal - Third metacarpal styloid process
 Tibia and Fibula - Tibial process, fibular process. 5th metatarsal of the foot - also known as the tuberosity of the fifth metatarsal

In botany, a styloid is a needle-shaped crystal of calcium oxalate found in some plants. It is a form of raphide.