category of words

[jojolanglais]

Is there a word to categorise words which use the name of the form of the thing they describe? As an exemple, in French, a trombone, as well as a musical instrument, is also a paperclip because of the shape. Can anybody think of similar words in English?

[Jumbuck]

triangle (another musical instrument)

[heathfield]

Well, I'm presently using a mouse!

[Barquentine]

You mean in the same way that 'onomatopoeia' is a type of word that comes from the sound it describes - such as 'oink' or 'roar'.
I think there must be such a word but I cannot think of it at the moment. I'll have a look & come back to this if I find anything.

[Barquentine]

Okay, I think I found the answer. 'Eponymous' means named after a person, 'toponymous' is named after a place, so a word named after the form of an object must be 'morphonymous'. It's not in any of my dictionaries but it's okay to coin new words I guess. 'Morph' comes from the Greek for 'form' as in metamorphosis. 'Onoma' is Greek for 'name' -as used in the other words I mentioned.
I have found one use of 'morphonymous' on the net (Google it yourself maybe) so either they coined it themselves or they found it somewhere.

[alfiesgirl]

A lozenge is a medicinal sweet to be held in the mouth, it is also a four-sided diamond-shaped figure.