It was obvious that Rouen in the hands of her arch-enemy was a perpetual menace to the safety of her own kingdom.
"History of the United Netherlands, 1590-1599, Vol. III. Complete" by John Lothrop Motley
Towards the end of the Bronze Age the safety-pin was arched into a bow, so as to include a greater amount of stuff in its compass.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3" by Various
Under the arch the females and the labourers who bear the larva; then pass in comparative safety.
"In the Wilds of Africa" by W.H.G. Kingston
The piers of that great arch of law along which our rights daily travel in safety were built by them.
"The Library and Society" by Various