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• cam
  cam

  noun

  a disk or cylinder having an irregular form such that its motion, usually rotary, gives to a part or parts in contact with it a specific rocking or reciprocating motion.
• Cam
  Cam

  noun

  a river in E England flowing NE by Cambridge, into the Ouse River. 40 miles (64 km) long.
• CAM
  CAM

  noun

  computer-aided manufacturing.
• Cam.
  Cam.

  abbreviation

  Cambridge.
• -cam
  -cam

  combining form

  camera

cam

¹ American  

[kam] / kæm /

noun

1. Machinery. a disk or cylinder having an irregular form such that its motion, usually rotary, gives to a part or parts in contact with it a specific rocking or reciprocating motion.

2. Automotive Slang. camshaft.

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verb (used with object)

cammed, camming

1. to provide (a machine part or mechanism) with a cam or cams.

cam ² American  

[kam] / kæm /

noun

1. a camera, especially one that records video (often used in combination, as in ).

   She's a professional photographer who uses state-of-the-art cams.

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Cam ³ American  

[kam] / kæm /

noun

1. a river in E England flowing NE by Cambridge, into the Ouse River. 40 miles (64 km) long.

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CAM ⁴ American  

[kam] / kæm /

noun

1. computer-aided manufacturing.

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Cam. ⁵ American  

abbreviation

1. Cambridge.

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CAM ¹ British  

abbreviation

1. complementary and alternative medicine

2. computer-aided manufacture

3. botany crassulacean acid metabolism: a form of photosynthesis, first described in crassulaceous plants, in which carbon dioxide is taken up only at night

4. Cameroon (international car registration)

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-cam ² British  

combining form

1. camera

   webcam

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Cam ³ British  

/ kæm /

noun

1. a river in E England, in Cambridgeshire, flowing through Cambridge to the River Ouse. Length: about 64 km (40 miles)

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cam ⁴ British  

/ kæm /

noun

1. a slider or roller attached to a rotating shaft to give a particular type of reciprocating motion to a part in contact with its profile

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Etymology

Origin of cam¹

< Dutch or Low German kam, kamm. See comb

Origin of cam²

First recorded in 1975–80; shortening of camera ¹ ( def. )

Origin of CAM⁴

First recorded in 1965–70

Example Sentences

Police have appealed for anyone who was in the city centre at the time of the trouble and who may have mobile phone or dash cam footage to contact them.

From BBC • May 25, 2026

Dorset's much-loved ospreys are incubating another bumper clutch of four eggs and all eyes are on their nest cam, waiting for the first chick to appear.

From BBC • May 2, 2026

The police body cam footage of her arrest serves as the “Mormon Wives” premiere’s cliffhanger.

From Salon • Mar. 21, 2026

Many schools use the nest cam as an educational tool, introducing kids to Jackie and Shadow.

From Los Angeles Times • Feb. 12, 2026

I turn on my phone cam and step behind him.

From "Saints and Misfits" by S.K. Ali