rulernoun [ C ]
uk/ˈruː.lər/us/ˈruː.lɚ/ruler noun [ C ] (LEADER)
C1 the leader of a country:
The country was without a ruler after the queen died.
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Leaders of national & regional governments
- chancellor
- chief executive
- demagogue
- Downing Street
- dynasty
- first lady
- head of state
- lieutenant governor
- Member of Parliament
- MP
- Number Ten
- Pres
- presidency
- president
- prime minister
- prime-ministerial
- the power behind the throne idiom
- veep
- vice president
- VP
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ruler noun [ C ] (FOR DRAWING)
A2 old-fashioned or formal rule a long, narrow, flat piece of plastic, metal, or wood with straight edges where centimetres or inches, or both are printed. It is used for measuring things and for drawing straight lines.
Thesaurus: synonyms and related words
Measuring, weighing, & counting devices
- calculator
- calipers
- detector
- dipstick
- gradation
- hydrograph
- instrument
- light meter
- manometer
- meter
- micrometer
- potometer
- rangefinder
- scope
- sensor
- spirit level
- tachometer
- tape measure
- theodolite
- weighbridge
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