the GNU version of the Collaborative International Dictionary of English
n. Any small leaping thysanurous insect of the genus Podura and related genera; a springtail.
The Century Dictionary and Cyclopedia
n. A Linnean genus of apterous insects, corresponding to the modern order Thysanura, used by later naturalists with various restrictions, and now typical of the family Poduridæ.
n. [lowercase] A species of this genus; a poduran.