lap ‧ is laz ‧ u ‧ li /ˌlæpəs ˈlæzjʊli, ˌlæpɪs ˈlæzjʊli $ -ˈlæzəli/ BrE AmE noun
[ Date: 1300-1400 ; Language: Medieval Latin ; Origin: Latin lapis 'stone' + Medieval Latin lazuli 'of lapis lazuli' (from Arabic lazaward ) ]
[uncountable and countable] a valuable bright blue stone, used especially in jewellery