The idiom "Red letter day" means:

Aa bad day

Ba memorable day

Ca holy day

Da sad day


B. a memorable day

Related Questions:

To "run away with" means to .....

Most of the people in India live from hand to mouth. The closest meaning to this idiom is:

Select the meaning of the idiom 'By leaps and bounds'?

The idiom ‘At an arm's length ’ means ?

My elder brother 'pokes his nose' into all my affairs (Correct meaning of the words italicised)