- placebo - an innocuous or inert medication; given as a pacifier or to the control group in experiments on the efficacy of a drug
--1 is a kind of medicine, medication, medicament, medicinal drug
--1 has particulars: active placebo- placebo - (Roman Catholic Church) vespers of the office for the dead
--2 is a kind of vesper
- placebo - (Roman Catholic Church) vespers of the office for the dead