this is a woman who accompanies another person (or persons) during social situations to assist in various ways.
Casual/Social: Socially a wing woman may just be a friend who stays at the other friends side to buffer undesired sexual advances from others. A younger or inexperienced person go out with an older and more experienced person to help with social shyness or for the purposes of blocking or facilitating social interaction with others (usually for dating purposes). Socially, a person may specifically ask a person who is either particularly more attractive, or particularly less attractive to go out with them and act as a shield or lure for romantic interests depending on the desired effect.
Professionally: A person (usually male) can hire a professional wingwoman for the purposes of attracting romantic interests. A professional wing woman is usually an attractive, confident and witty female who is skilled at "fetching" other similar females for her male client, for the purposes of dating. A professional wing woman can also offer additional social benefits such as increasing one's social circle and improving social standing/social credentials.
A professional wing woman is subtly different from a match maker, in that a match maker usually brings two people together for decidedly more serious or permanent reasons (like long term dating or marriage). Also with match makers, one person (or that person's relations), is often already acquainted with another person who is the object of their desire and requires the match maker to "bring the person around" - convincing that person to like the other.
With "fetching", the wing woman goes into a social situation cold and attempts to attract strangers to their client. The end aim of the client using wing woman services is usually just for the purposes of securing romantic encounters and improving social credibility - markedly more casual than that of those using match making services.
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