Webster's Revised Unabridged Dictionary (1913 + 1828)
result(s) from the 1913
Plump, v. i. [Cf. D. plompen, G. plumpen, Sw. plumpa, Dan. plumpe. See Plump, a.]
1. To grow plump; to swell out; as, her cheeks have plumped.
2. To drop or fall suddenly or heavily, all at once.Dulcissa plumps into a chair."
3. To give a plumper. See Plumper, 2.
Plump, v. t. [imp. & p. p. Plumped (?); p. pr. & vb. n. Plumping.]
1. To make plump; to fill (out) or support; -- often with up.<-- as, to plump up the pillows -->
To plump up the hollowness of their history with improbable miracles.
2. To cast or let drop all at once, suddenly and heavily; as, to plump a stone into water.
3. To give (a vote), as a plumper. See Plumper, 2.
Plump, adv. [Cf. D. plomp, interj., G. plump, plumps. Cf. Plump, a. &v.] Directly; suddenly; perpendicularly. Fall plump."
Beau. & Fl.