Meanings of halting lines in English

Having slight ear for music, he often wrote halting lines.

They're moving in fast, halting lines from my thorax to the road and back again.

She read aloud poor Peter's first halting lines, when he was struggling against sleep and cold.

There was tragedy in those little poems- asoul'slong tragedy in their halting lines, in the faltering breath with which they were sung.

"The darlings demanded," said he, "that I should re-write, if I could not understand their --nonsense and put their halting lines into proper form."