# black over Bill's mother's

idiom

Source: https://englishreference.com/idiom/black-over-bills-mothers
Updated: 2026-08-10

## Meaning

Describing rain-bearing dark clouds on the horizon.

## Examples

- It looks black over Bill's mother's, so bring an umbrella.
- We should finish the picnic quickly because it is looking black over Bill's mother's in the distance.
- The farmers watched the horizon anxiously, noting that it was black over Bill's mother's, signaling a heavy storm was approaching their fields.

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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.