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Trehala, trē-h�′la, n. a kind of manna excreted by the insect Larinus maculatus, in the form of cocoons—also Turkish manna.—n.

Trē′halōse, a sugar extracted from trehala.

M. Bourlier states that Tréhala, which is abundant in the shops of the Jew drug-dealers of Constantinople, is frequently used by the Arab and Turkish physicians in the form of a decoction, which is regarded by them as of peculiar efficacy in diseases of the respiratory organs.

The cocoons of Larinus maculatus, called in Turkish Tréhala.