picket line

Yet the teachers are angrily rejecting it and taking to the picket line.

Without warning, we found ourselves foul of a picket-line, and the vague forms of grazing horses loomed close by.

They had other employment now than guarding teams or keeping watch on the picket line.

The Second and Sixth Corps succeeded in taking the intrenched picket line, and holding it.

Precisely at ten o'clock there was a signal-gun, a yell, a volley of musketry as the Rebels attacked Parke's picket-line.

Parke strengthened his picket-line, and brought up his reserve artillery, to be ready in case of emergency.