Added 10 October 2026 tanbark /ˈtæn.bɑɹk/ noun Categories: PlantsObscure Words noun ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about tanbark at Wordnik → Where our words come from → The bark of the oak (or other trees) used as a source of tannin. The spent bark used as a ground covering. Woodchips, especially when used as a ground covering on children's playgrounds. Origin From tan + bark. From Wiktionary, via Kaikki.org (CC BY-SA) Related Words: oakbarktreebarkavaramquebrachobitterbarkabiestacahoutturpentinecanaigretamarack Back to today's word