Pla*ce"bo (?), n. [L., I shall please, fut. of placere to please.]
1. R. C. Ch.
The first antiphon of the vespers for the dead.
2. Med.
A prescription intended to humor or satisfy.
To sing placebo, to agree with one in his opinion; to be complaisant to.
Chaucer.
<-- placebo effect -->
© Webster 1913.