be sore, inflamed, bleary, fester
爛 centers on tissue breaking down from injury or disease: being sore, inflamed, or festering. The bleary sense extends this to eyes that are red and irritated as if inflamed.
爛 combines 火 (fire) with 闌, which likely contributes the sound and the idea of something spreading or breaking down. The character suggests tissue breaking down as if burned or inflamed.
Fire 火 on the left and the complex 闌 on the right suggest a wound that feels like it is burning and spreading. Picture a sore that becomes inflamed and festers, as if fire is trapped inside.
For ラン, imagine a runner with a festering sore that makes them run awkwardly: run -> ラン, and the inflamed wound burns like fire.
gorgeous; brilliant; dazzling; ornate; gaudy; flowery
innocent; naive; artless; unaffected; genuine; childlike
in full bloom; in full glory; glorious; luxuriant; splendid
sore; inflammation; ulceration
glaring; flaming; fiery; blazing
sore; erosion; ulceration; abscess; decomposition (of a body)
spring in full bloom; spring at its height
riot of cherry blossoms
brilliant; bright; radiant
brilliant; bright
to cause to be inflamed
to be sore; to be inflamed; to be bleary; to fester
go (board game)
burning to death
overripeness
one's full maturity
luxurious and gorgeous; splendid; dazzling; magnificent
luxurious and gorgeous; splendid; dazzling
to fester
luxurious and gorgeous; magnificent