呪具 is read as じゅぐ (jugu) and means charm.
じゅぐ
jugu
のろい
curse
のろう
to curse
じゅじゅつ
magic
じゅばく
spell (that restricts one's movements)
じゅもん
spell
がんぐ
(person or thing treated as a) plaything
かぐ
furniture
どうぐ
きぐ
utensil
ようぐ
tool
ぶんぼうぐ
stationery
えのぐ
paint