birch UK /bɜːtʃ/US /bɝt͡ʃ/noun 4verb 2forms 3 noun4 •Any of various trees of the genus Betula, native to countries in the Northern Hemisphere. •A hard wood taken from the birch tree, typically used to make furniture. •A stick, rod or bundle of twigs made from birch wood, used for punishment. •A birch-bark canoe. verb2 •To punish with a stick, bundle of twigs, or rod made of birch wood. •To punish as though one were using a stick, bundle of twigs, or rod made of birch wood.That the morrow would see us arraigned 'fore the Head And probably birched with a willow — 1902 formsbirched · birching · birches