虚位 is read as きょい (kyoi) and means nominal rank.
きょい
kyoi
きょすうたんい
imaginary unit
こぎ
fallacy
きょこう
fiction
きょむ
nihility
きょげん
falsehood
きょしん
open-minded
こくう
empty space
きょじゃく
feebleness
きょえい
vanity
きょえいしん
きょじつ
falsehood and truth
きょきょじつじつ
full of wiles and tricks