doodlebug

Short definition from Wiktionary

Noun

1. 1
   The V-1 flying bomb.
2. 2
   An automobile converted into a cheap tractor for a small farm during the Second World War.
3. 3
   An antlion larva (Myrmeleontidae).
4. 4
   A cockchafer (genus Melolontha).
5. 5
   A woodlouse.
6. 6
   A term of endearment.
7. 7
   A slackard or time-waster.
8. 8
   An idiot.
9. 9
   Someone who draws constantly.
10. 10
    A divining rod or similarly intended device.
11. 11
    Individual self-propelled train cars.