mackerel sky
idiomPart ofmackerel
mackerel sky — idiom
1. a sky covered with rows of small, white, patchy clouds that look like the patter
1.idiom
Definition
a sky covered with rows of small, white, patchy clouds that look like the pattern on a mackerel's back; often seen before a change in the weather
Example
Javier noticed a mackerel sky above the harbour and knew a storm was approaching.