ventouse
Concise Oxford English Dictionary © 2008 Oxford University Press:
ventouse /ˈvɛntuːs/
▶noun Medicine a cup-shaped suction device applied to the baby's head in childbirth to assist delivery.
– origin 1960s: from Fr., lit. ‘cupping-glass’, based on L. ventus ‘wind’.
'ventouse' also found in these Oxford entries:

