Apparently a strengthened form of the base of G5424; to fence or inclose, that is, (specifically) to block up (figuratively to silence)
KJV Usage: stop.
Probably strengthened from G5420; a signet (as fencing in or protecting from misappropriation); by implication the stamp impressed (as a mark of privacy, or genuineness), literally or figuratively
KJV Usage: seal.
From G5420; a fence, or inclosing barrier (literally or figuratively)
KJV Usage: hedge (+ round about), partition.
Probably from an obsolete φράω phraō (to rein in or curb; compare G5420); the midrif (as a partition of the body), that is, (figuratively and by implication of sympathy) the feelings (or sensitive nature; by extension [also in the plural] the mind or cognitive faculties)