[< Middle French, French montjoie observation point near a town, cairn to mark the way (c1200 in Old French as monjoie; 1135 as a war cry of Christian knights, c1100 as munjoie in this sense) < mont MOUNT n.1 + joie JOY n., after post-classical Latin Mons Gaudii (late 10th cent.), the name given by pilgrims to Rama, a mountain north-west of Jerusalem (Hebrew rmh, lit. ‘height’; one of a number of places with this name mentioned in the Old Testament and Hebrew Scriptures, e.g. Judges 19:13), which was later applied to various elevations from which the holy city could be seen, and subsequently to any sort of look-out.]

A cairn or similar mound; spec. a cairn erected by pilgrims to hold a cross.

1653 T. URQUHART tr. Rabelais Wks. II. xxxiii. 218 Finally they found a montjoy or heap of ordure and filth. 1727 N. BAILEY Universal Etymol. Eng. Dict. II, Mont-joye, a Name by which they call Heaps of Stones, laid together by Pilgrims, in which they stick Crosses [etc.].

(I hope you will live through the plague of nuns you seem to be suffering at the moment.)

I was once looking on-line for a plausible etymology of perro. One of the offerings I found was:

“perro es una onomatapeya del sonido que hace un perro”

another

“proviene del sonido que utilizaban los pastores para llamar a su perro”. Thanks for that boys.

As for “cerveza”, “viene de la diosa romana ceres”. Ah, nothing to do with “cervisia”, a vulgar latin term meaning “beer”, cognate with Welsh “cwrw” (which is generally piss weak, as anyone unfortunate enough to have drunk Brain’s Bitter will tell you).