1.3.amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail;
两栖类草恐龙,颈长而细,鞭形尾;
2.Undulipodium (pl. undulipodia) A whiplike organelle that protrudes from a eukaryotic cell and is used chiefly for locomotion (e.g. motile gametes) or feeding (e.g. ciliate protoctists).