1. subtag - Noun
2. subtag - Verb
subtag (plural subtags)
(computing) A tag that is secondary or subordinate to another tag.
subtag (third-person singular simple present subtags, present participle subtagging, simple past and past participle subtagged)
(computing, transitive) To apply a secondary or subordinate tag to.
Audio tracks were tagged by artist, and then subtagged by title and genre.