tuffeau

== French == === Alternative forms === tufeau === Etymology === From tuf +‎ -eau. === Noun === tuffeau m (plural tuffeaux) (geology) tufa In particular, tuffeau stone, from the Loire valley of France. synonym of tuf: tuff === Further reading === “tuffeau”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012