pouch, purse, bag
嚢 centers on a flexible container for carrying or storing items: a pouch, purse, or bag.
嚢 is a variant form of 囊, which historically combines 橐 (a bag or sack) with a phonetic element. The modern simplified form 嚢 reduces the inner complexity while retaining the bag-like enclosure.
The top 亠 and bottom 冖 form a container, while the inner 口 and surrounding strokes suggest something tied or gathered. Picture a drawstring pouch closed at the top and bottom.
For ノウ, imagine a pouch filled with knowledge (知能, ちのう): the ノウ of 知能 cues the reading, and the pouch holds the wisdom.
gallbladder; gall bladder
cyst
sandbag
scrotum
Ainosho (dictionary of Buddhism, first published in 1446)
citrus fruit segment
achillobursitis
chocolate cyst; ovarian endometrioma
Bowman's capsule
endometrial cyst; endometrioma; chocolate cyst
inside pocket
cnidosac; cnidocystic sac
anterior capsule (ophthalmology)
egg sac; egg case; ootheca
utriculus; utricle
yolk sac
bird's crop; bird's craw
in a bag or one's purse
cream rises to the top; a drill in a bag (will always poke through)
cystocarp (in red algae)