A primitive root; to flatten out or extend (as a tent); figuratively, to nurse a child (as promotive of growth); or perhaps a denom. From tephach, from dandling on the palms -- span, swaddle.
KJV: Thou hast called as in a solemn day my terrors round about, so that in the day of the LORD'S anger none escaped nor remained: those that I have swaddled and brought up hath mine enemy consumed.
NASB: You called as in the day of an appointed feast My terrors on every side; And there was no one who escaped or survived In the day of the LORD'S anger. Those whom I bore and reared, My enemy annihilated them.