This paper presents a corpus of Tashlhit bu-nouns, in which bu generally expresses the possessor of what the inner noun refers to. Comparison with other dialects of Amazigh is undertaken, revealing the cross-dialectal complexity of this type of nominal formation. Notwithstanding their morphosyntactic intricacy, which challenges Greenberg’s Universal 28, the Lexical Integrity Hypothesis and the No Phrase Constraint, bu-nouns have been dealt with only sporadically and have at times even been overlooked. The presentation will shed light on the inflectional (...) alternations inner bu-nouns exhibit, the existence of an alternative periphrastic expression, the pluralization pattern of these nouns, their alienable vs. inalienable possession patterns, as well as the possible recursion of the bu-noun affixes. (shrink)