枠
わく · waku · JLPT N3 · noun
frame
🖼️ 枠 = 木 wood + 卆 end: wood that marks where things end, a frame
A frame is the wooden border that marks where a picture or window ends. Waku sounds like 'walk', and a frame sets the limit of how far you can walk, which is why 枠 also means a limit or a set slot.