Noah Webster
Ache
ACHE, verb intransitive ake. [Gr. to ache or be in pain. The primary sense is to be pressed. Perhaps the oriental to press.]
1. To suffer pain; to have or be in pain, or in continued pain; as, the head aches.
2. To suffer grief, or extreme grief; to be distressed; as the heart aches.
ACHE, noun ake. Pain, or continued pain, in opposition to sudden twinges, or spasmodic pain. it denotes a more moderate degree of pain than pang, anguish, and torture.