Deadleg

I was a bit of a deadleg in them days. You know, footloose and inclined to be rather flirtatious with the ladies.

Source: wiktionary

"I can tell you now, he's a no-good," said the Liverpool D.C.I. "His form is nothing to speak of, but he's the errand lad and head butterer-up for a deadleg called Pete Garside.

Source: wiktionary

For the next year Liz lived alone with Lindy, occasionally consorting with 'more deadlegs', one of whom bruised Lindy when he had been drinking.

Source: wiktionary

There should be minimum deadleg between the valve and main process unit and, if possible, means for cleaning the deadleg.

Source: wiktionary