1. single-barreled having one barrel
  2. singletary pea a weak-stemmed winter annual native to Mediterranean region for long established in southern United States; cultivated as a cover and pasture crop
  3. swingletree a crossbar that is attached to the traces of a draft horse and to the vehicle or implement that the horse is pulling
  4. single-barrelled having one barrel
  5. single file a line of persons or things ranged one behind the other
  6. tandem trailer trucking rig with two trailers in tandem
  7. single crochet a crochet stitch
  8. single-stranded having a single strand
  9. shingle tree East Indian timber tree with hard durable wood used especially for tea boxes
  10. single tax a system of taxation in which a tax is levied on a single commodity (usually land)
  11. singularly in a singular manner or to a singular degree
  12. animal trainer one who trains or exhibits animals
  13. single-celled having a single cell (and thus not divided into cells)
  14. single-channel designating sound transmission or recording or reproduction over a single channel
  15. single-shelled univalve
  16. ringleader a person who leads (especially in illicit activities)
  17. semitrailer a trailer having wheels only in the rear
  18. single cream cream that has at least 18% butterfat
  19. single shell a shell for a single oarsman
  20. single-lane having a single lane for traffic in both directions