朱印 is read as しゅいん (shuin) and means red seal.
しゅいん
shuin
しゅいんせんぼうえき
foreign trade by authorized Japanese ships (early Edo period)
しゅいんじょう
license with a red seal (licence)
しゅいんせん
red seal ship
しゅいんちょう
notebook for collecting seal stamps sold at shrines and temples
ごしゅいん
letter bearing the shogun's scarlet seal
ごしゅいんせん
shogun-authorized trading vessel (authorised)
あけ
red
あか
Red (i.e. communist)
やじるし
arrow (symbol)
はたじるし
design (on a banner)
しょういん
a seal affixed to a document
けんいん
seal of approval