1. toward the head or upper end of something
Usage: often used in anatomy or directional contexts

1. directed toward or situated at the head
Usage: less common than the adverbial form

Examples

• The nerve impulse travels headward along the spinal cord.
• Blood flows headward through the jugular vein.
• The headward movement of the glacier was measured annually.
• Surgeons made a headward incision to access the tumor.
• The current pushed the boat headward toward the source of the river.