What does the title "Man Friday" mean? [closed]

phrases

It comes from the novel Robinson Crusoe by Daniel Defoe:

man Friday n. pl. men Friday or men Fridays An efficient, faithful male aide or employee. [After Friday, a character in Robinson Crusoe, a novel by Daniel Defoe.]

From the Free Dictionary online. Also, from Wikipedia:

Friday is one of the main characters of Daniel Defoe's 1719 novel Robinson Crusoe. Robinson Crusoe names the man, with whom he cannot at first communicate, Friday because they first meet on that day. The character is the source of the expression "Man Friday", used to describe a male personal assistant or servant, especially one who is particularly competent or loyal. Current usage also includes "Girl Friday".

Related

Is "spellbind" a defective verb?
"The larger of A and B" or "the larger of A or B"
Can I say "We don't must", any alternative using a modal verb if I can't?
Sun and moon: male or female?
"Relationship to" vs. "Relationship with"
How to determine if a "[something] fighter" fights for or against [something]?
Is there a plural of "metropolis", not "metropolises", that would sound better in a less formal register?
English equivalent of a Malayalam saying "In the land where no one has a nose, the broken-nosed one is the king"
Do ‘und’ and ‘till’ make “until” a tautology?
When putting "etc." in the middle of a sentence, do you use "etc," or "etc.," or "etc."?
What is another way of saying "final solution?"
Why is "violated" being used as future perfect with a person as the object?