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English definition of “ache”

ache

noun [C] uk   /eɪk/ us  
B1 a continuous pain that is unpleasant but not very strong: As you get older, you have all sorts of aches and pains. I've got a dull (= slight) ache in my lower back. B1 used in combinations with parts of the body to mean a continuous pain in the stated part: earache/a headache/toothache/backache I've had a stomach ache all morning.

ache

verb [I] uk   /eɪk/ us  
B2 to have a continuous pain that is unpleasant but not very strong: My head/tooth/back aches. I ache/I'm aching all over. I've got one or two aching muscles after yesterday's run.
Phrasal verbs
(Definition of ache from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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