Answer: prosthesis

AnswerCrossword Clue
PROSTHESISReplacement arm
prosthesisThe addition of a letter or syllable at the beginning of a word, as in Spanish escribo derived from Latin scribo
prosthesisAn artificial body part, such as a leg, a heart, or a breast implant
prosthesisthe addition to the human body of some artificial part, to replace one that is wanting, as a log or an eye