usage: mark by some ceremony or observation; "The citizens mark the anniversary of the revolution with a march and a parade"
2. commemorate, remember
usage: call to remembrance; keep alive the memory of someone or something, as in a ceremony; "We remembered the 50th anniversary of the liberation of Auschwitz"; "Remember the dead of the First World War"
usage: be or provide a memorial to a person or an event; "This sculpture commemorates the victims of the concentration camps"; "We memorialized the Dead"
Adjective
1. commemorative, commemorating
usage: intended as a commemoration; "a commemorative plaque"