From WordNet (r) 3.0 (2006) :
yellow poplar n 1: light easily worked wood of a tulip tree; used for furniture and veneer [syn: tulipwood, true tulipwood, whitewood, white poplar, yellow poplar] 2: tall North American deciduous timber tree having large tulip- shaped greenish yellow flowers and conelike fruit; yields soft white woods used especially for cabinet work [syn: tulip tree, tulip poplar, yellow poplar, canary whitewood, Liriodendron tulipifera]