(typography) the iteration mark 々, used to repeat kanji

(typography) each mark of the pairs of iteration marks ゝ/ゞ and ヽ/ヾ, respectively used to repeat 清音 (seion)/濁音 (dakuon) hiragana and katakana

(typography) either of the iteration marks 〱 and 〲, respectively used to repeat more than one 清音 (seion) and 濁音 (dakuon) in vertical text, as well as their decomposed counterparts, 〳, 〴 and 〵

dotting the i's and crossing the t's

(literally) a beautiful single red flower that blooms within a field of trees and grass / (figuratively) something unique that stands out among many other things