(informal, term of endearment) An endearingly sweet or beautiful child. / (informal, term of endearment) A young woman or girl. / The stem and valve head in a poppet valve.

plural of poppet

(mechanics) A valve (as in an internal combustion engine) which consists of a sliding shaft with a disk on the end (the disk being shaped to alternately plug and unplug a matching port) and which is operated by springs and possibly cams interacting with the shaft.

plural of poppet valve