also: かくし
Archaic or literary word for a pocket, especially one sewn into clothing. In modern Japanese, ポケット is overwhelmingly more common. The cross-reference to 隠し suggests a hidden or secret pocket nuance.
See also: 隠し
Old kimono had pockets sewn into them.
'Inō' is a word that is hardly used nowadays.
Obscure kanji spelling; the word is almost always written in kana. The reading いのう is standard.
Gikun reading for 衣嚢, treated as a separate written form. Rare and archaic.
The kanji 衣 (clothing) and 嚢 (bag/pouch) combine to literally mean 'clothing pouch'. The reading いのう is the standard on'yomi. The gikun reading かくし is likely derived from the verb 隠す (to hide), reflecting the pocket's function as a hidden compartment. The exact historical derivation is uncertain.