As a noun tranquillizers is
.
painkille
Not English
Painkille has no English definition. It may be misspelled.
English words similar to 'painkille':
pinnacle,
pinochle,
punchline,
paniculate,
pinacolone,
penislike,
punchlike,
pansylike,
paniclike,
pannicle,
pinchlike,
pumicelike,
penuchle,
pencillate