Webster’s Revised Unabridged Dictionary · 1913
Glasswort
Glass′wort′ (·wûrt′), 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.