One who idles; a lazy person; a sluggard.
One who idles; one who spends his or her time in inaction.
A mechanical device such as a pulley or wheel that does not transmit power, but supports a moving belt etc.
A dishonest person; a rogue, a scoundrel, a trickster.
Sometimes diminutive: a cheeky person or creature; a troublemaker.
A member of a criminal gang.