Yes, sorry, shall try to make my self more coherent, but note that the earlier post was made pre-vin rouge, and this one post, making it a post post. ( I hope Lionello may know what I mean)
I wasn’t there with a recording device, but the opinion is that gousse refers to the thinner /finer seed coverings (pericarps) as typified by the legumes. While the classification and term may be more recent, such plants and seeds have been around and important to humans a while longer ;-)
Such seed coverings open up as the seed disperses, reminding people (or so the theory goes) of an armpit, which is what gousset referred to in the C13th and 12th. By the early C14th, the term was used for the piece of armour protecting the armpit.
Not sure at what point it made it into English in its current usage and form.