flagging

Etymology

verb

1. present participle and gerund of flag

adj

1. Becoming tired or less dynamic; declining in strength; dwindling.
   These cars without doubt were the salvation of the C.I.E. network, as they provided fast, economical services with a degree of comfort which did much to retrieve a flagging passenger traffic. 1960 August, L. Hyland, “The Irish Scene”, in Trains Illustrated, page 467

noun

1. A pavement or sidewalk of flagstones; flagstones, collectively.
2. The process by which something flags or tires.
3. (television) The skewing or bending of the upper part of a television picture due to imperfect synchronization of the video signal.
   Because older TVs are not able to respond quickly enough to the horizontal time-base errors introduced from the VCR, a VCR connected to an older TV may cause severe bending or flagging at the top of the picture yet appear to operate normally on a newer TV set. 1998, Robert Brenner, Gregory Capelo, VCR Troubleshooting and Repair, page 158
4. Use of a handkerchief code or analogous display to signal sexual interests.