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1.
pron.
Single form of word themselves, used when refering to person whose sex (male or female) is not known or identified. Often used where the word them is used as a single form as well.
A person that looks at themself hella long in the mirror may be selfsexual.
by fcsuper May 04, 2006
 
2.
Dose-One and Gel's infamous exentric hip hop group. Formerly part of the group 'cLOUDDEAD'.
Man, Does spits out some ill material with Gel on Themselves.
by Seb April 26, 2004
 
3.
the singular form of the plural noun.
my computer changes "themself" to "themselves" all the time.
by cheryl lemons April 01, 2008
 
4.
A mythical pronoun occasionally sighted awkwardly straddling the thorny bush dividing plural from singular.

See myselves, mangluage.
"anybody who actually says this should kill themself."
by _m374 May 10, 2006