Son makes big strides skiing here (6)
I believe the answer is:
slopes
'skiing here' is the definition.
Although both the answer and 'skiing' are verbs, they are not in the same form of the verb.
'son makes big strides' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'makes big strides' becomes 'lopes' (I've seen this in another clue).
's'+'lopes'='SLOPES'
Can you help me to learn more?
(Other definitions for slopes that I've seen before include "Gradients, inclines" , "Slanting surfaces" , "Stretches of falling ground as for skiers" , "Of fairly great stature" , "Inclines, pitches" .)