[lahy-luh
k, -lahk, -lak] 
| 1. | any of various shrubs belonging to the genus Syringa, of the olive family, as S. vulgaris, having large clusters of fragrant purple or white flowers: the state flower of New Hampshire. |
| 2. | pale reddish purple. |
| 3. | having the color lilac. |
| li·lac (lī'lək, -lŏk, -lāk) n.
[Obsolete French, from Arabic līlak, from Middle Persian nīlak, from nīl, indigo, from Sanskrit nīlī, from nīla-, dark blue.] li'lac adj. |