blewartn.
Etymology: probably = blaewort , < blae adj. + wort n.1: compare blawort n.Previous versions of the OED give the stress as: ˈblewart.
Scottish.
rare.
1821 J. Hogg When the blewart bears a pearl, And the daisy turns a pea.
This entry has not yet been fully updated (first published 1887; most recently modified version published online March 2021).