• (n.) A division of a tribe; a group of genera of a little lower rank than a tribe.
(sub´trīb″) a taxonomic category sometimes established, subordinate to a tribe and superior to a genus.
Sub'tribe` noun (Bot. & Zoology) A division of a tribe; a group of genera of a little lower rank than a tribe. 
Type: Term Pronunciation: sŭb′trīb Definitions: 1. In biologic classification, a division between tribe and genus.
a taxonomic rank between tribe and genus