Etymology From Latin sabulum, from Proto-Indo-European *sámh₂dʰos. Pronunciation IPA(key): /ˈsajβɾo̝/ Noun saibro m (plural saibros) thick sand with pebbles Synonym: xabre (heraldry) sable (the black colour on a coat of arms) References Antón Luís Santamarina Fernández, editor (2006–2013), “saibro”, in Dicionario de Dicionarios da lingua galega [Dictionary of Dictionaries of the Galician language] (in Galician), Santiago de Compostela: Instituto da Lingua Galega Etymology From Latin sabulum, from Proto-Indo-European *sámh₂dʰos. Pronunciation (Brazil) IPA(key): /ˈsaj.bɾu/ [ˈsaɪ̯.bɾu] (Brazil) IPA(key): /ˈsaj.bɾu/ [ˈsaɪ̯.bɾu] (Southern Brazil) IPA(key): /ˈsaj.bɾo/ [ˈsaɪ̯.bɾo] (Portugal) IPA(key): /ˈsaj.bɾu/ [ˈsaj.βɾu] Hyphenation: sai‧bro Noun saibro m (plural saibros) a mixture of sand and clay used in construction thick sand with pebbles (tennis) clay (crushed stone or bricks used as the surface of the court) (heraldry) sable (the black colour on a coat of arms) Synonym: sable