ache

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To suffer a dull, sustained pain.
2. v. To feel sympathy or compassion.
3. v. To yearn painfully: refugees who ached for their homeland.
4. n. A dull, steady pain. See Synonyms at pain.
5. n. A longing or desire; a yen.
6. n. A painful sorrow.

Century Dictionary and Cyclopedia

1. n. Pain of some duration, in opposition to sudden twinges or spasmodic pain; a continued dull or heavy pain, as in toothache or earache.
2. n. Synonyms See pain, n., and agony.
3. To suffer pain; have or be in pain, or in continued pain; be distressed physically: as, his whole body ached.
4. n. A name of garden-parsley, Petroselinum sativum.

Wiktionary

1. v. To suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed.
2. n. Continued dull pain, as distinguished from sudden twinges, or spasmodic pain.
3. n. Parsley.
4. n. A variant spelling of aitch.
5. v. To suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed.
6. n. Continued dull pain, as distinguished from sudden twinges, or spasmodic pain.
7. n. Parsley.
8. n. A variant spelling of aitch.

GNU Webster's 1913

1. n. Continued pain, as distinguished from sudden twinges, or spasmodic pain. “Such an ache in my bones.”
2. v. To suffer pain; to have, or be in, pain, or in continued pain; to be distressed.

WordNet 3.0

1. v. have a desire for something or someone who is not present
2. n. a dull persistent (usually moderately intense) pain
3. v. feel physical pain
4. v. be the source of pain