Merriam-Webster's Collegiate® Dictionary, 11th Edition
SPRUCE
I. verb (spruced; sprucing)
Date: 1594
transitive verb to make spruce, intransitive verb to make oneself spruce ,
II. adjective (sprucer; sprucest)
Etymology: perhaps from obsolete English Spruce leather leather imported from Prussia
Date: 1599
neat or smart in appearance ; trim , sprucely adverb spruceness noun
III. noun (plural spruces; also spruce)
Etymology: obsolete Spruce Prussia, from Middle English, alteration of Pruce, from Anglo-French
Date: 1670
1. any of a genus ( Picea ) of evergreen trees of the pine family with a conical head of dense foliage, flat or 4-sided needles, pendulous cones, and soft light wood, any of several coniferous trees (as Douglas fir) of similar habit, the wood of a spruce