A rectangular closed box in which the body of a dead person is placed for burial.
"The old wooden coffin was lowered into the ground by the mourners as the sun began to set."
To place in a coffin.
"The undertaker carefully placed the body into the wooden coffin before sealing it shut for burial."
A surname.
"The local choir director, Mr. Coffin, was delighted to hear that his family name had been chosen for the community hall's new plaque."