also: ねじ
noun
Rare kanji form for ネジ/ねじ (screw). The reading らし is uncommon; the word is normally read ねじ.
See also: ネジ
「螺子」は「ねじ」の珍しい漢字表記で、読める人は少ない。
螺子 is a rare kanji spelling for 'screw,' and few people can read it.
ネジ is the standard modern spelling for 'screw'; 螺子 is a rare, literary kanji form.
The kanji 螺 (spiral shell) and 子 (child/small thing) combine to suggest a small spiral object, but the reading らし is irregular and the word is now almost always written in kana as ネジ/ねじ.