: 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
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Beautifully perfumed nose—a floral and fresh spring garden with lilacs, roses and juniper.—Tom Mullen, Forbes.com, 20 July 2025 In addition, sumac species have flower buds, and the lilacs are starting to wake up.—Doyle Rice, USA TODAY, 22 Mar. 2025 Come spring, the grounds burst with color, namely the 200-plus cherry blossom trees that bloom in April, and the lilacs, bluebells, and peonies springing to life throughout May.—Nicole Kliest, Vogue, 14 Mar. 2025 This option from notable Danish designer Montana Furniture (known for its modular storage solutions and vibrant paint jobs) boasts a myriad of eye-catching colors like a fiery red, energetic lilac, and cobalt blue to bring an air of excitement to your workday.—Erika Owen, Architectural Digest, 3 June 2025 See All Example Sentences for lilac
Word History
Etymology
obsolete French (now lilas), from Arabic līlak, from Persian nīlak bluish, from nīl blue, from Sanskrit nīla dark blue
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