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

The state reserve operates a live cam trained on one swath of land.

From Los Angeles Times • Mar. 26, 2026

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

From Salon • Mar. 21, 2026

Det Sgt Paul Lightowler said it was a "tragic incident" and urged any witnesses or anyone with dash cam footage to contact police.

From BBC • Mar. 19, 2026

With a single, in-block cam, one timing chain and two valves per cylinder, Godzilla is so primitive it’s practically primeval.

From The Wall Street Journal • Feb. 6, 2026

My head jerks up to the security cam in one corner of my room’s ceiling, wondering if they are hacking it to watch me, and then my attention goes back to the message.

From "Warcross" by Marie Lu