This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
籰 combines 竹 (bamboo) with 矍, but the exact historical development and original meaning are uncertain.
The top is bamboo 竹, and the bottom is a complex shape 矍. Without a clear meaning, picture an old bamboo tool whose purpose has been forgotten.
For ワク, imagine a bamboo frame (枠, わく) wrapped around the mysterious 矍 component: 枠 -> ワク, and the bamboo top reinforces the frame image.
spool (of thread); reel