What does 螺丝钉 (luósīdīng) mean in English?

Card 1693HSK Level 41693/3571
CARD1693
PROGRESS47%
螺丝钉
螺絲釘
luósīdīng
screw(Noun)

Reveal: Click/Space/Enter/↑↓/w/s/j/kNavigate: ←→/h/l/a/d