# nutshell

/ˈnətˌʃɛɫ/ (US) · /nˈʌtʃɛl/ (UK)

Source: https://englishreference.com/word/nutshell
Updated: 2026-08-08

## Senses

### 1. outer covering of a nut

noun · CEFR B2

the hard outer shell that covers the seed or kernel of a nut.

For teachers: the hard, protective outer layer of a nut.

- She cracked the nutshell to get to the walnut inside.
- The forest floor was littered with broken nutshells, evidence of the squirrels' busy morning gathering food for the winter.

### 2. a brief summary

noun · CEFR B2

a very short and clear description of something, usually in the phrase 'in a nutshell'.

For teachers: a concise summary or the essential points of a matter, typically appearing within the idiomatic prepositional phrase 'in a nutshell'.

- To put it in a nutshell, the company is losing money because of high costs.
- The CEO provided the year's performance in a nutshell, focusing only on the critical decline in market share and the proposed recovery plan.

### 3. a small boat

noun · CEFR C2 · Literary

a very small boat, especially one that feels tiny compared to the big ocean.

For teachers: a small, light vessel; often used to emphasize the boat's vulnerability or small size relative to the sea.

- Their tiny boat felt like a nutshell in the middle of the stormy Atlantic.
- The fisherman's nutshell of a boat was tossed violently by the gale, appearing dangerously fragile against the towering grey swells.

### 4. to summarize

verb · CEFR C2 · Informal

to give a very short summary of a long story or a difficult idea.

For teachers: to summarize or condense information into a brief form.

- Can you nutshell the main points of the meeting for me?
- The editor asked the reporter to nutshell the complex legal ruling into a single paragraph for the morning edition.

## Examples

- In a nutshell, the plan is too expensive.
- The CEO explained the company's new strategy in a nutshell during the brief morning meeting.
- While the technical report spans over fifty pages, the executive summary provides the core findings in a nutshell for the board of directors.

---

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.