watch that a person holds in the pants or suit pocket (usually with a chain attached)
A pocket watch (or pocketwatch) usually is a strapless personal
timepiece that is carried in a pocket. The display is traditionally
analog. Pocket watches generally have a chain to be secured to a
waistcoat,
lapel, or
belt loop (the chain or ornaments on it being known as
fobs), as well as a hinged cover to protect the face of the watch; these are often called "fob watches". Such covers are not always present. Also common are fasteners designed to be put through a buttonhole and worn in a jacket or
waistcoat, this sort being frequently associated with and named after train conductors.
See more at Wikipedia.org...