It means swearing violently and creatively.
It means talk a lot - a whole lot!
gwyrdd (green) ir (fresh; green; raw) glas (can mean blue or greenish gray)
It is not an idiom, it means your nose is itching.
idiom means expression like a page in a book
The green light on a traffic light means to go ahead. If you "get the green light," you have permission to move ahead on whatever project you are dealing with.
"to be green" is to be new at something, inexperienced, a rookie or novice
Feeling blue means you are sad or possibly depressed.
Feeling blue means you are sad or possibly depressed.
"Blue blood" LITERALLY means blood that is blue in color.
It means someone has blue eyes.
It's not an idiom. It's American slang for money, because American paper bills are green (and they fold when you put them in your pocket).
It means the person looks sick. Usually they are pale and green in the face.
if someone is true-blue, they support something or someone completely n…
It means talk a lot - a whole lot!
It means to be patriotic (by reference to flying the flag).
It means someone who is very good at things like gardening and growing things.
'Out of the blue' is a terse form of the expression 'out of a clear blue sky' (to mean 'unexpectedly, without foreshadowing'). It is not really a figure of speech, but an idiom. ('idiom':: an established expression in a language where the meaning is not necessarily what one would anticipate from the given meaning of the individual words).