# bicep

/ˈbaɪˌsɛp/ (US) · /bˈaɪsəp/ (UK) · CEFR B1 · Noun

Source: https://englishreference.com/word/bicep
Updated: 2026-05-30

## Definition

the large muscle on the front of your upper arm. It gets bigger when you lift things or do exercises like curls.

For teachers: the large muscle on the front of the upper arm, responsible for flexing the elbow. Often used in the plural to refer to the pair of muscles in both arms.

## Examples

- He did ten bicep curls to build his arm muscles.
- After carrying the heavy boxes up the stairs, his bicep felt sore and tired.
- The athlete's well-defined bicep was a testament to years of rigorous weight training and a strict nutritional regimen designed to maximize muscle hypertrophy.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.