n.1 the expression of deep sorrow, esp. for a dead person, by the wearing of solemn dress.
2 the clothes worn in mourning.
Phrases and idioms:
in mourning assuming the signs of mourning, esp. in dress. mourning-band a band of black crape etc. round a person's sleeve or hat as a token of mourning. mourning dove an American dove with a plaintive note, Zenaida macroura. mourning-paper notepaper with a black edge. mourning-ring a ring worn as a memorial of a deceased person.