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”)

(astronomy) declination

(literally) red beard; a man with a red beard / a Ryukyu robin, Larvivora komadori

a red sun, a bright sun, or the summer sun / a day in the traditional Japanese six-day week which is unlucky except for at noon