\Ex"pi*ate\, v. t. [imp. & p. p. {Expiated}; p. pr. &
vb. n. {Expiating}.] [L. expiatus, p. p. of expiare to
expiate; ex out + piare to seek to appease, to purify with
sacred rites, fr. pius pious. See {Pious}.]
1. 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; as,
   to expiate a crime, a guilt, or sin.
         To expiate his treason, hath naught left. --Milton.
         The Treasurer obliged himself to expiate the injury.
                                               --Clarendon.
2. To purify with sacred rites. [Obs.]
         Neither let there be found among you any one that
         shall expiate his son or daughter, making them to
         pass through the fire.                --Deut. xviii.
                                               10 (Douay
                                               version)

\Ex"pi*ate\, a. [L. expiatus,p. p]
Terminated. [Obs.] --Shak.