thumb|200px|The coat of arms of the Visconti of Milan showing the biscione wearing a crown
thumb|200px|The coat of arms of the Visconti of Milan showing the biscione wearing a crown
The biscione (English: "big grass snake"), less commonly known also as the vipera, is in heraldry a charge consisting of a divine serpent with a child in its mouth; the serpent may be variously described as being in the act of swallowing the child, or the child may be emerging from its mouth.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).