# mains

/ˈmeɪnz/ (US) · /mˈeɪnz/ (UK)

Source: https://englishreference.com/word/mains
Updated: 2026-08-08

## Senses

### 1. utility supply

noun · CEFR B2 · British English

the system of pipes or wires that brings electricity, water, or gas into a house.

For teachers: the domestic electrical, water, or gas supply system, typically connected to a public network or grid.

- The house is not connected to the water mains, so they use a well.
- A burst water main caused significant flooding in the city centre, leaving thousands of residents without a reliable supply for several hours.

Usage: Usually used with 'the' and often functions as an uncountable noun or a plural noun depending on the specific utility.

### 2. main courses

noun · CEFR B1 · Informal

the largest or most important part of a meal.

For teachers: the primary courses of a meal, served after starters and before desserts.

- We ordered two mains and a side of vegetables to share.
- The restaurant offers a diverse selection of mains, ranging from traditional roasted meats to innovative plant-based options.

Usage: Commonly used in restaurant contexts as a plural noun to refer to the menu section or multiple dishes.

### 3. electricity supply

noun · CEFR B2 · British English

the electricity that comes from a wall socket rather than a battery.

For teachers: the public electricity supply as distinguished from battery power.

- You can run this radio off the mains or use four batteries.
- The device features an internal rechargeable battery, though it performs more efficiently when connected directly to the mains.

Usage: Often used in the phrase 'the mains' or 'mains power'.

## Examples

- The water mains burst during the cold winter night.
- The electrician had to switch off the power at the mains before he could safely repair the damaged wiring.
- While the appetizers were light and refreshing, the mains consisted of hearty, traditional stews that reflected the region's agricultural heritage and seasonal availability.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.