knurl

knurl — noun

1. a small, hard, round lump that sticks out from the surface of something, such as

1.名詞C2
釋義

a small, hard, round lump that sticks out from the surface of something, such as on a piece of wood, a bone, or tree bark

例句

Ramón ran his thumb over the knurl on the oak branch, wondering if the tree was diseased.

The wooden chair had a knurl on its arm where a branch had once grown.

collocation: knurl on [surface]

同義詞
  • bump

    much more common and general; any raised area on a surface

  • lump

    a swelling or solid mass, often larger or softer than a knurl

  • knob

    a rounded protrusion with a more defined shape; also used for door handles

  • nodule

    more technical or medical; a small rounded lump found in geology or on the body

反義詞
  • dent

    a hollow or depression, the opposite shape of a raised bump

  • hollow

    an indentation or empty space within a surface

用法筆記

This sense is uncommon in everyday speech and may sound literary or technical. A knurl in this meaning is typically a natural feature of a surface, such as a knot in wood or a growth on bone, not a man-made feature.

常見錯誤

❌He sanded down the knurled on the branch.
✅He sanded down the knurl on the branch.
💡'knurl' is the noun for the lump itself; 'knurled' is an adjective describing a surface that has been given a rough texture.

2. a small raised line or bump that is pressed or cut into a metal part, giving the

2.名詞C2
釋義

a small raised line or bump that is pressed or cut into a metal part, giving the surface a rough texture so it does not slip when held

例句

The metal handle had fine knurls along its sides so Niran could grip it firmly.

Salma chose a jar opener with deep knurls since her hands got slippery when cooking.

collocation: deep knurls

同義詞
  • ridge

    a much more general term for any long raised line on a surface

  • bead

    a narrow rounded band, similar in shape but often decorative rather than functional

  • groove

    a channel or indentation; the opposite shape of a knurl

反義詞

用法筆記

The related adjective 'knurled' appears frequently in manufacturing catalogues (e.g. 'knurled knob', 'knurled handle'). The noun is often used in the plural because knurls are typically created in a patterned series rather than as a single ridge.

常見錯誤

❌The knurls on the handle help you to slip it easily.
✅The knurls on the handle help you to grip it firmly.
💡knurls are designed to prevent slipping, not to make something more slippery.