Definition of aches:
(v) :
(intransitive, stative) To suffer pain; to be the source of, or be in, pain, especially continued dull pain; to be distressed.
(n) :
Continued dull pain, as distinguished from sudden twinges, or spasmodic pain.
(v) :
(transitive, literary, rare) To cause someone or something to suffer pain.
(n) :
(obsolete or historical) Parsley.
(n) :
A language spoken by the Yi people of South-Western China.
(n) :
Rare spelling of aitch. [The name of the Latin-script letter H/h.]