(n) :
a creatures which flies at night; a noctural flier or traveller; one who departs or flees at night in order to avoid creditors (often used attributively)
"do not give your credit card number to that fly-by-night operation."
(n) :
a creatures which flies at night; a noctural flier or traveller; one who departs or flees at night in order to avoid creditors (often used attributively)
"do not give your credit card number to that fly-by-night operation."