v. To honour the memory of someone or something with a ceremony.
v. To serve as a memorial to someone or something.
the GNU version of the Collaborative International Dictionary of English
v. To call to remembrance by a special act or observance; to celebrate with honor and solemnity; to honor, as a person or event, by some act of respect or affection, intended to preserve the remembrance of the person or event.
The Century Dictionary and Cyclopedia
To preserve the memory of by a solemn act; celebrate with honor and solemnity; honor, as a person or an event, by some act of respect or affection, intended to keep him or it in memory.
To serve as a memento or remembrancer of; perpetuate or celebrate the memory of: as, a monument commemorating a great battle; a book commemorating the services of a philanthropist.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. be or provide a memorial to a person or an event
v. call to remembrance; keep alive the memory of someone or something, as in a ceremony
v. mark by some ceremony or observation
Word Usage
"Pictures, videos, and joyful phone calls commemorate every milestone: first tooth, mastering a two-wheeler, driver's license, graduation, job, marriage, and children of their own."