[f. BELL sb.1 + GLASS.] A bell-shaped glass vessel or cover, used chiefly for the protection of plants.
1682. Wheler, Journ. Greece, II. 193. A large square Room … covered with a Cuppalo, thorough which the Light is let by Bell-glasses.
1737. Miller, Gard. Dict., s.v. Lupulus, When they … put Bell-glasses over their Cauliflowers.
1809. Allen & Pepys, in Phil. Trans., XCIX. 413. We placed a Guinea pig upon it, with the bell-glass over him.
1851. Glenny, Handbk. Fl.-gard., 36. Cuttings may be planted … and covered by a bell-glass.
