威儀 is read as いぎ (igi) and means dignity.
いぎ
igi
いぎぼそ
informal kasaya worn primarily by adherents of Pure Land Buddhism
いばる
to put on airs
いせい
power
いかく
threat
いげん
dignity
いりょく
いしん
prestige
いこう
いあつ
coercion
いよう
dignified appearance
いふう
majesty
いばりくさる
to throw one's weight around