from The Century Dictionary.
- Toward or tending toward the brain.
Sorry, no etymologies found.
His senses were so heightened that he could smell not just roasting flesh but the rosemary with which it had been rubbed; could hear not only the calm rhythm of his breath but the tidal murmur of his blood climbing brainward on one side of his neck and descending heartward on the other.
But as the hour approached, the solemn importance of the occasion was stealing brainward, and she even began to feel glad she was