lilac

noun

li·​lac ˈlī-ˌläk  -ˌlak 

-lək

1

a

: a widely cultivated European shrub (Syringa vulgaris) of the olive family that has cordate ovate leaves and large panicles of fragrant pinkish-purple or white flowers

b

: a tree or shrub congeneric with the lilac

2

: a variable color averaging a moderate purple

Illustration of lilac

• lilac 1a

Examples of lilac in a Sentence

Recent Examples on the Web

My mom’s team had at least given me a heftier brochure featuring tasteful photographs of lilacs; this one was literally stapled together, with cartoonish drawings like the ones on airplane safety cards that show your aircraft making a pleasant water landing. —Amanda Peet, New Yorker, 21 Mar. 2026

Our lilacs and cherry blossoms look spectacular. —Daily News, 20 Mar. 2026

The color combos of hyper-saturated and nearly neon lilac, fuchsia, peach, and the like. —Julia Harrison, Architectural Digest, 19 Mar. 2026

Chase Infiniti One Battle After Another star Chase Infiniti is a pastel vision in her lilac gown, which is echoed on her eyelids with a shimmery, pale purple shade. —Marci Robin, Allure, 15 Mar. 2026

Word History

Etymology

obsolete French (now lilas), from Arabic līlak, from Persian nīlak bluish, from nīl blue, from Sanskrit nīla dark blue

First Known Use

1625, in the meaning defined at sense 1a

Rhymes for lilac

• aback
• anzac
• attack
• backpack
• backtrack
• bareback
• blackjack
• brownback
• buyback
• callback
• cognac
• comeback

Kids Definition

lilac

noun

li·​lac ˈlī-lək  -ˌlak 

-ˌläk

1

: any of a genus of shrubs and trees related to the olive

especially : a European shrub widely grown for its showy clusters of fragrant pink, purple, or white flowers

2

: a medium purple