Definition of slow-running:
(adj) :
Taking a long time to move or go a short distance, or to perform an action; not quick in motion; proceeding at a low speed.
(adj) :
Not happening in a short time; spread over a comparatively long time.
(adj) :
Not hasty; not tending to hurry; acting with deliberation or caution.
(adj) :
(informal, somewhat derogatory) Of reduced intellectual capacity; not quick to comprehend.
(adj) :
(of a clock or the like) Behind in time; indicating a time earlier than the true time.
(adj) :
Lacking spirit; deficient in liveliness or briskness.