(computing) That can be safely plugged in while the system is turned on and running.

plural of hot cathode

(sports, idiomatic, informal) In team sports, a player who keeps the ball to themselves, rather than passing it.

Typhus.

Alternative form of take one's ball and go home

(computing) A file system directory which is monitored by software so that any new files arriving in it can be processed.

(US) A vehicle from which hot (and sometimes also cold) food can be purchased.

plural of hot truck

Alternative form of fish-horn

(historical) A horn that produces a loud and penetrating sound, used by a fishmonger to announce that the catch is in.