yellow poplar n 1: light easily worked wood of a tulip tree; used for furniture and veneer [syn: {tulipwood}, {true tulipwood}, {whitewood}, {white 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}, {canary whitewood}, {Liriodendron tulipifera}]