froth(redirected from froths at the mouth)
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1. A mass of bubbles in or on a liquid; foam.
2. Salivary foam released as a result of disease or exhaustion.
v. (also frôth, frŏth) frothed, frothing, froths
1. To cover with foam.
2. To cause to foam.
To exude or expel foam: a dog frothing at the mouth.