The mouse that hath but one hole is easily taken.

Understand the thought

Meaning in plain English

Dependence on a single way out can leave someone with few options when that route is blocked. The mouse’s one hole pictures vulnerability, without making every arrangement require many alternatives or promising that a backup will always help.

What the words are saying

The mouse has only one hole available in the proverb’s image, so losing access to it removes its escape route. Figuratively, a plan may rely on one person, place or method without considering what happens if it becomes unavailable. A useful response identifies the dependency and decides whether another option is worthwhile and practicable. Alternatives can also cost time or create confusion, so multiplying them is not automatically better. The comparison should prompt proportionate preparation rather than constant fear or blame after a difficulty. Its concern is the degree of reliance on one route, not a literal instruction about catching animals.

Everyday example

A club keeps a second contact for opening its meeting room so that an absent keyholder does not automatically cancel the session.

When to use it

Use it when a plan has one important dependency and no workable alternative.

Agent-assisted editorial interpretation. This explains the words; it does not by itself verify their author or earliest origin.