Arbor Day

noun

: a day designated for planting trees

Examples of Arbor Day in a Sentence

Recent Examples on the Web

Dan Lambe, chief executive of the Arbor Day Foundation, a nonprofit focused on inspiring people to plant trees, hailed the project. — Lila Seidman, Los Angeles Times, 23 May 2026

Arborists and horticulturalists from local organizations recently joined with the Park District of Oak Park for an Arbor Day celebration at Field Park with residents and students at Mann School. — Melinda Moore, Chicago Tribune, 4 May 2026

Arbor Day celebrations — which often include tree giveaways — are part of that, but many local cities and counties have hired full-time arborists in an effort to increase local tree canopies at every opportunity. — Orlando Sentinel Editorial Board, The Orlando Sentinel, 25 Apr. 2026

Friday is Arbor Day, a day to celebrate trees. — Christopher Derose, CBS News, 24 Apr. 2026

Word History

Etymology

Latin arbor tree

First Known Use

1863, in the meaning defined above

Rhymes for Arbor Day

• aaa
• alleyway
• alumnae
• anime
• anyway
• arete
• attache
• axillae
• baa
• beaujolais
• bouvier
• breakaway

Kids Definition

Arbor Day

noun

: a day in April set aside as a day to plant trees