1. noun /beɪ/
a) A shrub of the family Lauraceae, having dark green leaves and berries.
both you here with many a cursed oth, / Sweare she is yours, and stirre vp bloudie frayes, / To win a willow bough, whilest other weares the bayes.
b) The leaves of this shrub, woven into a garland used to reward a champion or victor; hence, fame, victory.
2. verb /beɪ/
a) To bark.
b) To bark at.
3. adjective /beɪ/
Of a reddish-brown colour (especially of horses).
Wikipedia foundation.