The sources checked do not record Gimba as a personal name or give it a meaning.
Funny
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Unisex
English
G
5 Letters
Recorded as a given name in German, where it is feminine
An English surname from Batte, a medieval form of Bartholomew
Recorded as a Danish masculine given name; no meaning is documented.
A nickname, borne by the trance musician Onno Borgen