a red panda

a red deer

a large Japanese field mouse

Synonym of ドール (dōru, “dhole”)

red line / (historical) Short for 赤線地帯(あかせんちたい) (akasenchitai): Akasen (districts in Japan where prostitution and the sex industry flourished)

"red sheet", specifically a red translucent plastic sheet used in studying to render red-colored text illegible

red brick

Red alpenglow of Mount Fuji in the morning, especially in early autumn.

(astronomy) right ascension

Kyūjitai form of 赤経 (“right ascension”)