n.

1. 【植】桦，白桦[C]
2. 桦木[U]
3. （鞭打用的）桦条[C]
   A criminal might receive twelve strokes of the birch.

   罪犯可能要挨十二鞭。

vt.

1. 用桦条鞭打

n.

1. a slender hardy tree with thin, peeling, silver-grey or white bark, which yields a hard pale wood. [Betula pendula (silver birch) and related species.]
2. (the birch) historical a formal punishment in which a person was flogged with a bundle of birch twigs.

v.