Indeed the original meaning of the word before it was adopted for the hydrocarbon material.
From: Cerridwen Connelly <[log in to unmask]>
To: [log in to unmask]
Sent: Thursday, 12 April 2012, 9:35
Subject: Re: [BRITARCH] 'urnes à décor plastique'
I agree with John. Plastique literally means "mould-able".
> My plodding suggestion is "Urns with moulded decoration".
> -- John Palmer