Webster’s Revised Unabridged Dictionary · 1913 Puffing Puff′ing, a. & n. from Puff, v. i. & t. Puffing adder. (Zoöl.) Same as Puff adder (b), under Puff. — Puffing pig (Zoöl.), the common porpoise. ‹ Puffiness Puffingly ›