slow·worm 
(slōwûrm′)
(slōwûrm′)n.
A limbless lizard (Anguis fragilis) of Europe and western Asia, having a smooth snakelike body and feeding chiefly on slugs. Also called blindworm.
[Alteration (influenced by SLOW) of Middle English slowurm, from Old English slāwyrm : slā-, earthworm, slowworm + wyrm, worm; see WORM.]