a common blackbird

the poem traditionally attributed to Wani in the Kokin Wakashū kana preface:

Kyūjitai form of 愛国歌 (“Aegukka, the North Korean national anthem”) / Kyūjitai form of 愛国歌 (“Aegukga, the South Korean national anthem”)

(phonetics) voiced consonant

(Internet slang) singer who can sing in both a masculine and a feminine voice

vulgar and thick voice

(figuratively, uncommon, possibly archaic) describes a state of having few visitors, of being lonesome, desolate, or unpopular, especially in business