片～
かた～ · kata～ · JLPT N1 · noun
single
🧦 片 = one side or half: 片道 = one-way (one + road), 片手 = one hand
片 means one half or one side. 片手 (katate) is one hand, and 片思い (katakoi) is one-sided love. A single sock is 片方の靴下.
片 — right half of 木 (tree split vertically)
Pictograph showing the right half of a tree 木 split down the middle, depicting a thin slice or slab of wood. From this came the meanings 'slice,' 'flat thin piece,' and by extension 'sheet' or 'card.' Its mirror image 爿 represents the left half.