the GNU version of the Collaborative International Dictionary of English
v. To extinguish the guilt of by sufferance of penalty or some equivalent; to make complete satisfaction for; to atone for; to make amends for; to make expiation for.
v. To purify with sacred rites.
adj. Terminated.
The Century Dictionary and Cyclopedia
To atone for; make satisfaction or reparation for; remove or endeavor to remove the moral guilt of (a crime or evil act), or counteract its evil effects, by suffering a penalty or doing some counterbalancing good.
To avert by certain observances.
Expired.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. make amends for
Word Usage
"He realized the gravity of his action, in killing the Tsar's representative, and, while viewing it as necessary, resolved to "expiate" his crime by taking his own life."