What is "lumbers"

Usage examples of "lumbers".

Nessie lumbers on, oblivious, her red-rimmed eyes indicating to anyone knowledgeable about these creatures that she's high as a kite on a double dose of reptile tranquilizer.

The transport lumbers into the air and picks up speed, streaking south through the darkness.

They simply string themselves out in a line to either side of their air transport and watch while the robot-tank lumbers toward the main gate of the Barran Bluff compound.