clenbuterol

 
Pronunciation: /klɛnˈbjuːtərɒl/

noun

[mass noun] Medicine
  • a synthetic drug used in the treatment of asthma and respiratory diseases and also in veterinary obstetrics. It also promotes the growth of muscle and has been used illegally by athletes to enhance performance.

Origin:

1970s: from c(h)l(oro-) + (ph)en(yl) + but(yl) + er + -ol