birch > define

Hard close-grained wood of any of various birch trees; used especially in furniture and interior finishes and plywood.
Any betulaceous tree or shrub of the genus Betula having a thin peeling bark.
- synonyms: birch tree
A switch consisting of a twig or a bundle of twigs from a birch tree; used to hit people as punishment.
- usage: "my father never spared the birch"
- synonyms: birch rod

(a.) Of or pertaining to the birch; birchen.
(n.) A birch twig or birch twigs, used for flogging.
(v.t.) To whip with a birch rod or twig; to flog.
(n.) A tree of several species, constituting the genus Betula; as, the white or common birch (B. alba) (also called silver birch and lady birch); the dwarf birch (B. glandulosa); the paper or canoe birch (B. papyracea); the yellow birch (B. lutea); the black or cherry birch (B. lenta).
(n.) A birch-bark canoe.
(n.) The wood or timber of the birch.

by Webster's Revised Unabridged Dictionary

Birch is a masculine given name