Adjective
Capable of being distinguished and named; able to be called by a specific name.
(obsolete) Worthy of being named or having a name; memorable.
Source: en.wiktionary.orgThere is nothing special about such a monotonous sequence except that it is easy to describe; the same fact applies to any nameable specific sequence, such as "RGRGRG" repeated forever, or "a-b-aa-bb-aaa-bbb-. Source: Internet
"The number not nameable 0 in less than eleven words" may be nameable 1 in less than eleven words under this scheme. Source: Internet