Noun
A
drug
sold
during
the
late
1950s
and
early
1960s
as
a
sleeping
aid
,
and
to
pregnant
women
as
an
antiemetic
to
combat
morning sickness
and
other
symptoms
,
but
withdrawn
as
causing
severe
birth defects
,
such
as
phocomelia
;
currently
used
to
treat
leprosy
.