(idiomatic) to have one's fly (zipper) undone. / (idiomatic) to fly under the radar; to act in a discreet or sneaky fashion

Any member of the genus Hypoderma of large flies, parasitic on cattle and deer.

To fish using a fly (fishing lure) as bait.

Alternative form of no-fly list

(law, aviation) A confidential list containing the names of people who are not permitted to board an aircraft, prepared by government authorities in various jurisdictions and distributed to commercial airlines.

plural of flying rat

plural of flying jib

plural of flying kiss

plural of flying lemur

plural of flying meet