The Collaborative International Dictionary
Crucify \Cru"ci*fy\ (-f?), v. t. [imp. & p. p. Crucified (-f?d); p. pr. & vb. n. Crucifying.] [F. crucifier, fr. (assumed) LL. crucificare, for crucifigere, fr, L. crux, crucis, cross + figere to fix, the ending -figere being changed to -ficare, F. -fier (in compounds), as if fr. L. facere to do, make. See Cross, and Fix, and cf. Crucifix.]
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To fasten to a cross; to put to death by nailing the hands and feet to a cross or gibbet.
They cried, saying, Crucify him, cricify him.
--Luke xxiii. 21. -
To destroy the power or ruling influence of; to subdue completely; to mortify.
They that are Christ's have crucified the flesh, with the affections and lusts.
--Gal. v. 24. To vex or torment.
--Beau. & FL.
Wiktionary
vb. (present participle of crucify English)
Usage examples of "crucifying".
Therefore it seems that the Jews in crucifying Christ knew Him to be the Son of God.