right to do something, authority

The katakana syllable ロ (ro). Its equivalent in hiragana is ろ (ro). It is the forty-third syllable in the gojūon order; its position is ラ行オ段 (ra-gyō o-dan, “row ra, section o”).

si (musical note)

short form for Russia or Russian, Russo- (prefix), short form of ロシア (Roshia), also written in kanji: 露 (ろ, Ro).

中々: very, quite, considerably, rather, by no means (with negative verb)

very, quite, considerably, rather / by no means (with negative verb)

the daytime, during the day / a half day, half of a day

inside

entirely engrossed in something

(Tibetan Buddhism) bardo