Testicle or head covering?

Judge for yourselves: is it proper for a woman to pray to God with her head unveiled? Does not nature itself teach you that if a man wears long hair, it is degrading to him, but if a woman has long hair, it is her glory? For her hair is given to her for a covering (1 Corinthians 11:13-15, NRSV, emphasis mine).

What if ‘covering’ (περιβολαίου) ought to be translated as ‘testicle’? Check out these fascinating articles: