As a noun frocks
is plural of lang=en.
As a verb frecks is
third-person singular of freck.
frecks
English
Verb
(head)
(freck) freck
English
Verb
(
en verb)
(transitive, rare, poetic) To checker; to diversify.
- The painted windows, frecking gloom with glow. — Lowell.
(
Webster 1913)