Jisho

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ねじ 螺子
Common word JLPT N2 Links
Noun
1. screw​Usually written using kana alone
  • この
  • きかい機械
  • は
  • いちじかん１時間
  • に
  • せん千
  • こ個
  • の
  • ねじ
  • を
  • せいぞう製造
  • する
    • 。
This machine cranks out a thousand screws an hour.
Noun
2. key (of a clock, watch, etc.); spring​Usually written using kana alone
Wikipedia definition
3. Helix​A helix is a type of smooth space curve, i.e. a curve in three-dimensional space. It has the property that the tangent line at any point makes a constant angle with a fixed line called the axis. Examples of helixes are coil springs and the handrails of spiral staircases. A "filled-in" helix – for example, a spiral ramp – is called a helicoid.
Read “Helix” on English Wikipedia
Read “螺旋” on Japanese Wikipedia
Read “Helix” on DBpedia
Other forms
捻子 【ねじ】、捩子 【ねじ】、螺旋 【ねじ】、螺子 【らし】、ネジ
Notes
螺子: Rarely-used kanji form. 捻子: Rarely-used kanji form. 捩子: Rarely-used kanji form. 螺旋: Rarely-used kanji form. 螺子: Rarely-used kanji form.

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