Conditions listing medical symptoms: Quadriplegia: The following list of conditions have 'Quadriplegia' or similar listed as a symptom in our database. This computer-generated list may be inaccurate or incomplete. Always seek prompt professional medical advice about the cause of any symptom.
Definition of flyâbyânight. 1  1 : given to making a quick profit usually by shady or irresponsible acts. 2  2 : transitory, passing flyâbyânight fashions.
Top Definition. fly by night. A slang term used to describe someone or more than one person (can be as large as a business or any other entity) who is extremely unreliable, unless they want something from you. To put these dirtbags in their place, one must confront them directly face to face.