ENGLISH
REFERENCE

warmer

n.
US //ˈwɔɹmɝ// UK //wˈɔːmɐ// warmer
  1. 1 a heating device (n.)
    B1 Intermediate

    a device or object used to keep something at a pleasant temperature.

    an apparatus or object designed to maintain or provide a moderate degree of heat.

    Example

    She put a hand warmer in her pocket before going out into the snow.

    Example

    The laboratory used a specialized plate warmer to ensure the chemical samples remained at a constant temperature during the observation period.
  2. 2 clothing (n.)
    B1 Intermediate

    a piece of clothing worn to keep a specific part of your body warm.

    a garment designed to insulate a specific part of the anatomy, often used in athletic or dance contexts.

    Example

    The dancer wore leg warmers to keep her muscles from getting cold.

    Example

    During the winter months, cyclists often rely on arm warmers that can be easily removed once their body temperature rises from exertion.
  3. 3 introductory activity (n.)
    B2 Upper Intermediate Academic

    a short activity at the start of a lesson or meeting to help people get ready.

    a brief preliminary activity designed to stimulate interest or prepare participants for a primary task.

    Example

    The teacher started the class with a quick warmer to get the students talking.

    Example

    The workshop facilitator employed a five-minute warmer to encourage collaboration among the delegates before introducing the main project goals.
Origin

From warm + -er.

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

Last updated June 20, 2026