Webster's Revised Unabridged Dictionary · 1913

Bast

Bast ({not transcribed}) , noun

[Anglo-Saxon bast; akin to Icelandic, Swedish, Danish, Dutch, & German bast, of unknown origin. Compare Bass the tree.]

1.
The inner fibrous bark of various plants; esp. of the lime tree; hence, matting, cordage, etc., made therefrom.
2.
A thick mat or hassock. See 2d Bass, 2.