smalto

[smahl-toh, smawl-; Italian zmahl-taw] /ˈsmɑl toʊ, ˈsmɔl-; Italian ˈzmɑl tɔ/
noun, plural smaltos Italian, smalti
[zmahl-tee] /ˈzmɑl ti/ (Show IPA)
1.
colored glass or similar vitreous material used in mosaic.
2.
a piece of this.
Origin
1695-1705; < Italian < Germanic; see smelt1, enamel
British Dictionary definitions for smalto

smalto

/ˈsmɑːltəʊ/
noun (pl) -tos, -ti (-tiː)
1.
coloured glass, etc, used in mosaics
Word Origin
C18: from Italian; see smalt