Definition of clems:
(v) :
(UK, dialect, transitive or intransitive) To be hungry; starve.
(n) :
(Northumberland, Geordie, Teesside, slang) A brick or stone.
(n) :
(chiefly Hartlepool, slang, plural clem) One stone (unit of mass).
(n) :
(Geordie, vulgar, slang) A testicle.
(n) :
A unisex given name.
(n) :
A diminutive of the male given name Clement.