li ‧ lac /ˈlaɪlək/ BrE AmE noun
[ Date: 1600-1700 ; Origin: Early French , from Arabic lilak , from Persian nilak 'bluish' , from nil 'blue' ]
1 . [countable] a small tree with pale purple or white flowers
2 . [uncountable] a pale purple colour SYN mauve
—lilac adjective :
a lilac dress