Learn how to say Soother correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word soothe:
gently calm (a person or their feelings):
a shot of brandy might soothe his nerves
reduce pain or discomfort in (a part of the body):
to soothe the skin try chamomile or thyme
relieve or ease (pain):
it contains a mild anaesthetic to soothe the pain