(prn) noun
1. The dried fruit of any of several varieties of plum.
2. Any of various plums that may be dried without spoiling.
3. Slang A stupid or uninteresting person. [<OF <LL pruna <L prunum <Gk. proumnon, prounon a plum. Doublet of PLUM.]

(prn) v.t. & v.i. pruned, prun·ing
1. To trim or cut superfluous branches or parts (from) so as to improve growth, appearance, etc.
2. To cut off (superfluous branches or parts). See Synonyms under ABBREVIATE. [<OF proöignier, proignier,? <provaignier cut <provain a slip <L propago; prob. infl. in form by rooignier cut off, ult. <L rotundus round]
—prun′er noun

(prn) v.t. & v.i. pruned, prun·ing Archaic
To dress up; preen. [<OF poroindre anoint <por- (<L pro before) + oindre anoint <L ungere]