1. toggle switch a hinged switch that can assume either of two positions
  2. gill arch one of the bony or cartilaginous arches on each side of the pharynx that support the gills of fishes and aquatic amphibians
  3. glasswork an article of tableware made of glass
  4. biological research scientific research conducted by biologists
  5. keel arch a pointed arch having an S-shape on both sides
  6. research a seeking for knowledge
  7. thankless wretch a person who shows no gratitude
  8. single stitch a crochet stitch
  9. classwork the part of a student's work that is done in the classroom
  10. eyeglass wearer a person who wears spectacles in order to see better
  11. Geoglossaceae a family of fungi belonging to the order Helotiales
  12. search look or seek
  13. quick march marching at quick time
  14. Galeocerdo tiger sharks
  15. Geoglossum type genus of the Geoglossaceae comprising the earthtongues
  16. vocaliser an organism that can utter vocal sounds
  17. exarch a bishop in eastern Christendom who holds a place below a patriarch but above a metropolitan
  18. glycerol a sweet syrupy trihydroxy alcohol obtained by saponification of fats and oils
  19. glycerin a sweet syrupy trihydroxy alcohol obtained by saponification of fats and oils
  20. cockle-burr any coarse weed of the genus Xanthium having spiny burrs