What is "reposal"

Reposal \Re*pos"al\ (r[-e]*p[=o]z"al), n. [From Repose.]

1. The act or state of reposing; as, the reposal of a trust.
   --Shak.

2. That on which one reposes. [Obs.]
   --Burton.

n. 1 The act or state of repose. 2 (context obsolete English) That on which one reposes.

Reposal is a barbiturate derivative invented in the 1960s in Denmark. It has sedative, hypnotic and anticonvulsant properties, and was used primarily for the treatment of insomnia.