Definition of "synth"

synth¹

/sɪnθ/

noun
plural synths
1. (slang) A musical synthesizer.
verb
third-person singular simple present synths, present participle synthing, simple past and past participle synthed
1. (slang) To play on a musical synthesizer.
  Quotations
  Les Miserables couldn't tour the road circuit affordably today if Seann Alderking hadn't reduced its pit-people requirements by masterfully synthing large portions of its sound, and with a range of sonic effects that makes Svengali sound like something played on a nursery xylophone.
  1991, Theater Week, volume 4, page 38
  There's some synthing, but mostly real strings and horns. And a remarkable acoustic piano solo, "Jacqueline," in memory of the modern sophisticated lady.
  1995, Jazz Times, volume 25, numbers 1-5

synth²

/sɪnθ/

adjective
not comparable
1. Abbreviation of synthetic.
noun
plural synths
1. (science fiction) A synthetic humanoid, an android, a robot, a clone

synth³

/sɪnθ/

verb
third-person singular simple present synths, present participle synthing, simple past and past participle synthed
1. Synonym of synthesize