What does lilac mean?
A lilac is a fragrant flowering shrub or small tree that produces clusters of pinkish-purple, white, or occasionally darker blossoms. It is valued both as an ornamental plant and for the distinctive, sweet scent of its flowers, which has long made lilacs a familiar feature of gardens and spring landscapes. The word also functions as an adjective describing a soft purple color, as in a lilac dress or a lilac-colored sky. In ordinary usage, “lilac” can refer to the whole plant, its individual flowers, or the color associated with the blossoms. The term is recognizable across British and American English, although it is especially common in gardening, floral, and decorative contexts.
A fragrant flowering shrub or small tree with clusters of pink, purple, or white flowers.
"An old lilac grew beside the fence, its branches covered in blossoms."
The plural “lilacs” can refer to individual shrubs or to multiple flowering clusters.
Pale purple in color, especially the color of lilac flowers.
"She wore a lilac blouse with white trousers."
This sense is commonly used in descriptions of clothing, décor, and visual design.
The plural can refer to several shrubs, individual flower clusters, or multiple lilac-colored objects.
"The path was lined with lilacs in bloom."
Lilacs are often remembered for their scent: the flower's perfume has inspired perfumes, candles, and generations of gardens.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does lilac come from?
The word entered English in the 17th century through French lilas, which was borrowed from Persian lilāk. Persian lilāk itself reflects an older Central Asian or Persian term for the flowering shrub. The English spelling was later influenced by the consonant cluster in related European forms, producing the modern form “lilac.” The plant's long-standing association with its color helped establish the modern color sense.
Related word forms
How lilac is actually used
The noun is standard in British and American English. As an adjective, it is usually used before a noun and commonly means pale purple; the color sense is less common in formal writing than the plant sense.
Easily confused with lilac
A lilac is a fragrant flowering shrub with clusters of small blossoms, while a lilium is a member of the lily genus and generally refers to plants with larger, trumpet-shaped flowers.