'Glasswort' definitions:

Definition of 'glasswort'

(from WordNet)
noun
Bushy plant of Old World salt marshes and sea beaches having prickly leaves; burned to produce a crude soda ash [syn: saltwort, barilla, glasswort, kali, kelpwort, Salsola kali, Salsola soda]
noun
Fleshy maritime plant having fleshy stems with rudimentary scalelike leaves and small spikes of minute flowers; formerly used in making glass [syn: glasswort, samphire, Salicornia europaea]

Definition of 'Glasswort'

From: GCIDE
  • Glasswort \Glass"wort`\, n. (Bot.) A seashore plant of the Spinach family ({Salicornia herbacea}), with succulent jointed stems; also, a prickly plant of the same family (Salsola Kali), both formerly burned for the sake of the ashes, which yield soda for making glass and soap. [1913 Webster]