Today’s #kanji is #単, which is listed under the radical of #つかんむり（ツ） in my 大修館新漢和辞典 but apparently some dictionaries list it under the radical of #じゅう（十）. There seems to be more than one theory regarding how this character was developed but one says it’s a pictograph depicting a certain bow and it’s the original form of 弾.
Meaning: single, one
Reading: タン、ひとえ、ひと
単位（タンイ）: [noun] a unit, a denomination; a credit/point
単一（タンイチ）: [noun] a D-size (dry-cell) battery
単一（タンイツ）: [noun/なadj] single, individual
単語（タンゴ）: [noun] a word
単車（タンシャ）: [noun] a motorcycle, a motorbike
単純（タンジュン）: [なadj] simple, straightforward, uncomplicated
単身（タンシン）: [noun but often used like an adverb] alone, by oneself, unaccompanied
単独（タンドク）の: [noun + の] single, sole, solo, unassisted, independent
簡単（カンタン）: [なadj] simple, brief, concise, easy
十二単*（ジュウニひとえ）: [noun] a layered kimono (worn by a court lady)
単衣*（ひとえ）: [noun] unlined clothes (for summer), a single layer of kimono for summer months
