Scottish National Dictionary (1700–)
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First published 1976 (SND Vol. X).
This entry has not been updated since then but may contain minor corrections and revisions.
BUCKBEARDS, n.pl. The tall meadowgrass, Arrhenatherum avenaceum (Bwk. 1853 G. Johnston Botany E. Borders), so-called from the bearded flower glumes. [From buck, he-goat, + beards.]
