probably strengthened from φράσσω; a signet (as fencing in or protecting from misappropriation); by implication, the stamp impressed (as a mark of privacy, or genuineness), literally or figuratively:--seal.
from σφραγίς; to stamp (with a signet or private mark) for security or preservation (literally or figuratively); by implication, to keep secret, to attest:--(set a, set to) seal up, stop.
from a presumed derivative of the base of γινώσκω (compare ὀνίνημι); a "name" (literally or figuratively) (authority, character):--called, (+ sur-)name(-d).
perhaps from the base of χειμών in the sense of its congener the base of χάσμα (through the idea of hollowness for grasping); the hand (literally or figuratively (power); especially (by Hebraism) a means or instrument):--hand.