Obs. Forms: 5, 6 fillok, (6 fyllok), 6, 8 fillock. [Of obscure formation; the original sense is perh. ‘filly’ (cf. Welsh ffilawg filly, wanton girl, in Salesbury, 1547 filoc, which may be an early adoption from Eng.). The word may be f. FILL-Y + -OCK, or represent (with Northern pronunciation) an OE. *fylece wk. fem., corresponding to OHG. fulihha:—OTeut. *fulikôn-, f. *ful-, fol-: see FOAL.]

1

  A wanton young girl. Also attrib.

2

c. 1450[?].  Hoccleve’s Let. Cupide, 262 [MS. Arch. Seld. B 24]. Swyche fillokes [other texts filthes] as weren vertulesse.

3

1500–20.  Dunbar, Poems, xiv. 74.

                    So mony fillok with fuck sailis
Within this land was nevir hard nor sene.

4

15[?].  Hye way to Spyttel Hous, 142, in Hazl., E. P. P., IV. 29. Mychers, hedge-creepers, fylloks, and lushes.

5

1569.  E. Hake, Newes out of Powles Churchyarde (1579), G j b.

        Yong fillock Jylles, and bawdie Jacks
  at inconuenient tides.

6