Yes, STINGERS is a Scrabble word!

Letter values in Scrabble US: S 1, T 1, I 1, N 1, G 2, E 1, R 1, S 1.

Is it a valid word?

STINGERS is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

a cocktail made of made of creme de menthe and brandy
a remark capable of wounding mentally
a portable low altitude surface-to-air missile system using infrared guidance and an impact fuse; fired from the shoulder
a sharp organ of offense or defense (as of a wasp or stingray or scorpion) often connected with a poison gland
a sharp stinging blow