tanbark

Plural: tanbarks

Noun

• bark rich in tannin; bruised and cut in pieces to use for tanning; spent tanbark used as a ground covering
• The bark of the oak (or other trees) used as a source of tannin.
• The spent bark used as a ground covering.
• Woodchips.
• pl. -S a tree bark used as a source of tannin