poppet
Concise Oxford English Dictionary © 2008 Oxford University Press:
poppet/ˈpɒpɪt/
▶noun
- 1 Brit. informal an endearingly sweet or pretty child.
- 2 (also poppet valve) Engineering a mushroom-shaped valve with a flat end piece that is lifted in and out of an opening by an axial rod.
'poppet' also found in these Oxford entries:

