n.

1. 紀念物；紀念碑；紀念館；紀念活動[C][（+to）]
   The service is a memorial to those killed in the war.

   祈禱儀式是為紀念在戰爭中犧牲的人。

2. 記錄；編年史[P]
3. 陳情書，請願書[C]
   present a memorial to the king

   向國王呈遞請願書

a.

1. 紀念的；追悼的；記憶的
   a memorial speech

   悼詞

n.

1. a structure or statue established in memory of a person or event.
   ▸ [as modifier] intended to commemorate someone or something:

   a memorial service.
2. chiefly historical a statement of facts, especially as the basis of a petition.
   ▸a written record.