Yes, KINOS is a Scrabble word!

Letter values in Scrabble US: K 5, I 1, N 1, O 1, S 1.

Is it a valid word?

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

a gum obtained from various tropical plants; used as an astringent and in tanning
East Indian tree yielding a resin or extract often used medicinally and in e.g. tanning

Also: gum kino, kino gum, pterocarpus marsupium.