ˈmatˌlō noun
( -s )
Etymology: French, from Middle French, from Middle Dutch mattenoot, from matte mat, bed (from Late Latin matta mat) + noot companion; akin to Old English nēotan to make use of, enjoy — more at mat , neat
1. Britain : sailor
2. : a deep blue that is greener and duller than Yale blue and greener and slightly lighter than royal (sense 8b) — called also Olympian blue