WordNet (r) 3.0 (2006):

Pinus jeffreyi
    n 1: tall symmetrical pine of western North America having long
         blue-green needles in bunches of 3 and elongated cones on
         spreading somewhat pendulous branches; sometimes classified
         as a variety of ponderosa pine [syn: Jeffrey pine,
         Jeffrey's pine, black pine, Pinus jeffreyi]