α. 1700s– bakeboard; Scottish pre-1700 baikbuird, pre-1700 baikbured, 1800s bakbrod, 1800s bakebroad, 1800s– bakeboard, 1800s– bakebrod, 1900s bakebuird.
β. 1500s backboarde, 1500s backbord, 1500s backbourde; English regional (chiefly north-western) 1700s bacboard, 1700s backbwoard, 1800s backboard, 1800s backboord, 1800s backbuird.
γ. 1800s bawburd (Scottish).