3. Light, unsubstantial matter. Tusser.

Froth insect (Zoˆl.), the cuckoo spit or frog hopper; -- called also

froth spit, froth worm, and froth fly. -- Froth spit. See Cuckoo spit,

under Cuckoo.

Froth, v. t. [imp. & p. p. Frothed (?); p. pr. & vb. n.. Frothing.] 1.

To cause to foam.