Webster's Revised Unabridged Dictionary · 1913

Bear's-breech

Bear's-breech ({not transcribed}) , noun

1.
(Botany) The English cow parsnip (Heracleum sphondylium) — Dr. Prior
2.
a widely cultivated southern European acanthus (Acanthus mollis) with whitish purple-veined flowers. See Acanthus, n., 1.

Also: bear's-breeches