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]