Then he drew himself upon his plank and swam, doubling his speed.
He talked about 'doubling it' and said that two could play at that game!
I cast him off, and, doubling my body, I kicked at the ceiling.
Then, doubling the last point of the island, she disappeared all at once.
They lost no time in doubling the line and passing the ends out of the window.
Doubling the diameter of a pipe increases its capacity four times.
As for doubling the Breakwater, he had given up hope of that!
(a.) Doubling a number, and then adding or subtracting as the case may require.
"Only by measuring with a bit of string and doubling the string," he said.
His face blanched; he knew I was doubling my insult for him.