As a proper noun nelly
is a spelling variant of nellie, a diminutive of the female given names eleanor and helen.
As a noun celly is
(slang) cellmate.
nelly
English
Etymology 1
Shortened from Nelly Duff'', for ''puff'', i.e. breath of ''life
Noun
(-) (not used in the plural)
(Cockney rhyming slang) Life.
Usage notes
* Used principally in the phrase (not on your nelly).
Etymology 2
From the woman's name, Nelly
Noun
(nellies)
(derogatory, slang) An effeminate homosexual man.
(British, slang) A silly person.
A common name for the giant petrels, Macronectes giganteus'' and ''Macronectes halli
Hyponyms
* (petrel) Antarctic giant petrel, northern piant petrel, southern giant fulmar, southern giant petrel
Adjective
(er)
(slang) Unmanly, effeminate.
celly
English
Noun
(cellies)
(slang) cellmate