Encourages (5)
'encourages' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for urges that I've seen before include "Eggs on" , "Persuades to do something" , "Advocates strongly" , "Drives" , "Encourages" .)
(Other definitions for stokes that I've seen before include "Builds up a fire" , "Viscosity units; fuels (furnace)" , "Shovels coal into furnace" , "Adds coal to (a furnace)" , "Feeds with fuel" .)