LATIN DICTIONARYLexicon Latīnum
interjection

mēcastor

mēcastor
Classical[meːˈkas.tɔr]Ecclesiastical[meˈkas.tor]

Meaning

  1. an expression of surprise, annoyance or excitedness

mecastor, v. Castor.

Origins

Ellipsis of adiuva mē Castor (“so help me Castor”).

Quick answers

What does mēcastor mean in Latin?
mēcastor, a interjection, means “an expression of surprise, annoyance or excitedness”.
How do you pronounce mēcastor?
In classical Latin, [meːˈkas.tɔr]; in ecclesiastical (church) Latin, [meˈkas.tor].