Meaning of 掻痒 in Japanese

Definition of 掻痒

そうよう(souyou) 【掻痒 ·そう痒 ·瘙痒】

かっかそうよう(kakkasouyou) 【隔靴掻痒】

(n) being frustrated because something is not quite as hoped (just as one cannot scratch an itch from outside a shoe); having an itch that one cannot scratch

まこそうよう(makosouyou) 【麻姑掻痒】

(n) things happening exactly as one pleases (wishes); someone being very attentive to one's wishes