(call center jargon) A caller who hangs up immediately when they hear a delay announcement.

plural of backyard

The macrolide antibiotic (3R,4S,5S,7R,9E,11S,12R)-4-[(2S,3R,4S,6R)-4-(dimethylamino)-3-hydroxy-6-methyloxan-2-yl]oxy-12-ethyl-11-hydroxy-3,5,7,11-tetramethyl-1-oxacyclododec-9-ene-2,8-dione

An incorrect or faulty detection