birch

a switch consisting of a twig or a bundle of twigs from a birch tree; used to hit people as punishment

“my father never spared the birch”

consisting of or made of wood of the birch tree

any betulaceous tree or shrub of the genus Betula having a thin peeling bark

hard close-grained wood of any of various birch trees; used especially in furniture and interior finishes and plywood

whip with a birch twig