v. Obs. rare–1. [f. ON. fylgsni (sb. pl.) hiding-place (cf. Goih. fulhsni sing. in same sense), f. OTeut. *fulg- ablaut-var. of *felh- to hide: see FEAL v.] intr. To lurk.
a. 1400[?]. Morte Arth., 880.
| Sire, see ȝe ȝone farlande, with ȝone two fyrez, | |
| Þar filsnez þat fende, fraist whene the lykes? |
