Spanworm

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  spanworm \span"worm`\ (sp[a^]n"w[^u]rm`), n. (Zool.)
     The larva of any geometrid moth, as the cankerworm; a
     geometer; a measuring worm.
     [1913 Webster]