A tagset is a list of part-of-speech tags (POS tags for short), i.e. labels used to indicate the part of speech and sometimes also other grammatical categories (case, tense etc.) of each token in a text corpus.
Igbo part-of-speech tagset
This Igbo part-of-speech tagset is available in Igbo corpora annotated by the Igbo Part of Speech (POS) Tagger