Definition of star-wheel in English:

star-wheel

noun ˈstɑːwiːl

1Any of various notched, toothed, or spoked wheels forming part of a given mechanism, especially (a) a notched or toothed wheel used in clockwork to regulate or measure movement; (b) (in later use) a ratchet wheel used in drum brakes to regulate brake pad wear.
2A device used to determine the position and visibility of the stars at a given time and date, typically composed of a circular star chart overlaid by an adjustable cover with an elliptical opening.

Origin

Mid 18th century (in an earlier sense). From star + wheel.

Definition of star-wheel in US English:

star-wheel

nounˈstɑːwiːl

1Any of various notched, toothed, or spoked wheels forming part of a given mechanism, especially (a) a notched or toothed wheel used in clockwork to regulate or measure movement; (b) (in later use) a ratchet wheel used in drum brakes to regulate brake pad wear.
2A device used to determine the position and visibility of the stars at a given time and date, typically composed of a circular star chart overlaid by an adjustable cover with an elliptical opening.

Origin

Mid 18th century (in an earlier sense). From star + wheel.

单词	star-wheel
释义	Definition of star-wheel in English: star-wheel noun ˈstɑːwiːl 1Any of various notched, toothed, or spoked wheels forming part of a given mechanism, especially (a) a notched or toothed wheel used in clockwork to regulate or measure movement; (b) (in later use) a ratchet wheel used in drum brakes to regulate brake pad wear. 2A device used to determine the position and visibility of the stars at a given time and date, typically composed of a circular star chart overlaid by an adjustable cover with an elliptical opening. Origin Mid 18th century (in an earlier sense). From star + wheel. Definition of star-wheel in US English: star-wheel nounˈstɑːwiːl 1Any of various notched, toothed, or spoked wheels forming part of a given mechanism, especially (a) a notched or toothed wheel used in clockwork to regulate or measure movement; (b) (in later use) a ratchet wheel used in drum brakes to regulate brake pad wear. 2A device used to determine the position and visibility of the stars at a given time and date, typically composed of a circular star chart overlaid by an adjustable cover with an elliptical opening. Origin Mid 18th century (in an earlier sense). From star + wheel.
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