Aventail is a term that is primarily used in medieval armor to refer to the chain mail hood that protects the neck and shoulders. Synonyms for this term include camail, coif, hood, and mail hood. There are also other terms such as bacinet and bascinet, which are types of helmets used in conjunction with the aventail. The word coif is often used colloquially to refer specifically to the chain mail hood, while hood may refer more generally to any type of protective headgear. Other synonyms for aventail include liripipe and chaperon, which are types of hoods or veils worn over the head, often paired with the camail to provide additional protection.