Japanese edit

For pronunciation and definitions of ネジ – see the following entry.
螺子ねじ
[noun] a screw
[noun] a spring or coil that can be wound, such as that of a clock
[noun] (figurative) marbles (sanity)
Alternative spellings
捻子, 捩子, 螺旋
(This term, ネジ, is the katakana spelling of the above term.)