Obs. exc. dial. [Onomatopœic, with frequentative suffix common in vbs. expressing agitated motion; cf. FLASK v.1]

1

  1.  intr. To flap about (as a fish); to flutter (as a bird); to flounder.

2

1681.  Chetham, Angler’s Vade-m., vii. § 5 (1689), 76. Hale him not too near the top of the Water, lest by flaskering he break your Line.

3

c. 1746.  J. Collier (Tim Bobbin), Lanc. Dialect, Wks. (1775), 29. Deawn coom I, Arsy-versy, weh Nip eh meh Arm i’th Wetur, Nip I leet fend for hur fell’n on flaskert int’ eh geete how’d on o Sawgh.

4

1888.  Sheffield Gloss., Flasker, to struggle, to flutter as a bird does its wings.

5

  2.  trans. To smother, stifle; also, to bewilder.

6

1820.  R. Wilbraham, Cheshire Gloss., Flasker, to choke, or stifle; a person lying in the mud and unable to extricate himself is said to be flaskered.

7

1884.  Cheshire Gloss., ‘For goodness sake, childer, howd yer din, aw’m fair flaskert wi’ th’ nize.’

8