English Reference
noun · verb

rod

n. · v.
US /ˈɹɑd/ UK /ɹˈɒd/ rod UK spelling rod's, rod's

  1. 01 B2 Upper Intermediate

    n.a long, thin, straight object made of wood, metal, or plastic.

    n.a straight, slender bar or shaft of wood, metal, or other rigid material.

    Simple

    The curtains hang from a long metal rod above the window.

    In context

    The structural integrity of the frame was reinforced by several steel rods placed at regular intervals along the base.

  2. 02 A2 Elementary Sport

    n.a long, flexible pole used for catching fish.

    n.a long, slender, usually tapering pole used for angling.

    Simple

    He spent the afternoon by the lake with his fishing rod and a bucket.

    In context

    Modern fishing rods are typically constructed from carbon fibre or fiberglass to provide a balance of flexibility and strength during a catch.

    fishing pole
  3. 03 C1 Advanced Technical Technical

    n.a metal bar that connects moving parts in a machine.

    n.a straight bar that unites moving parts of a machine, often for transferring power or holding components together.

    Simple

    The engine failed because a connecting rod broke while the car was moving.

    In context

    The piston is attached to the crankshaft via a connecting rod, which converts linear motion into rotational energy.

    connecting roddriveshaft
  4. 04 C1 Advanced Technical Science

    n.a special cell in the eye that helps you see in low light.

    n.a light-sensitive cell in the retina of the eye that provides peripheral vision and the ability to see in dim light.

    Simple

    The rods in your eyes are more active when you walk in the dark.

    In context

    Unlike cones, which detect colour, rods are highly sensitive to light intensity and are essential for scotopic vision.

    rod cell
  5. 05 C1 Advanced LiteraryArchaic

    n.a stick used in the past for hitting people as a punishment.

    n.a stick or bundle of twigs used to administer corporal punishment.

    Simple

    In the old days, teachers sometimes used a rod to punish students.

    In context

    The biblical proverb suggests that he who spares the rod hates his son, reflecting historical attitudes toward discipline.

  6. 06 C2 Proficiency Slang

    n.a slang word for a handgun or pistol.

    n.a slang term for a firearm, specifically a handgun.

    Simple

    The detective noticed the criminal was carrying a rod in his waistband.

    In context

    In classic noir fiction, characters often refer to their pistols as rods or heaters to maintain a hard-boiled tone.

  7. 07 C2 Proficiency Technical Technical

    v.to put metal bars into concrete to make it stronger.

    v.to reinforce concrete or other building materials with metal rods.

    Simple

    The workers had to rod the foundation before pouring the cement.

    In context

    Engineers specified that the retaining wall must be rodded thoroughly to withstand the lateral pressure of the soil.

Fifteen months later, her death, and the silence surrounding it, has become a lightning rod for discontent among Vietnam's youth.

BBC News· 23 Aug 2026

To go around it, StemRad’s team broke it apart into hexagonal rods of varying lengths and cross-sections.

Ars Technica· 13 Aug 2026

Etymology 1

Abbreviated form of Rodney and of Roderick, both with roots originating from Germanic *hrōþiz (“fame”).

Etymology 2

Ultimately from Proto-Slavic *rȍdъ.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Level C1 · Advanced
Frequency Common
Updated