From Longman Dictionary of Contemporary Englishfencingfenc‧ing /ˈfensɪŋ/ noun [uncountable] 1 
DSOthe sport of fighting with a long thin sword2 TBCfences or the pieces of wood, metal etc used to make them
DSOthe sport of fighting with a long thin sword2 TBCfences or the pieces of wood, metal etc used to make themExamples from the Corpus
fencing• Judo, karate, dance, fencing, table tennis, carpet bowls and aerobics are all available.• The stud farm says it uses security methods such as electric fencing.• The cat knew every crumbling brick, every rotting piece of fencing, every dustbin-lined alleyway.• Are they aware that the South Park fencing is in urgent need of repair or replacement?• The proposed fencing would impinge on a public bridleway which traverses the field.• The Government's assurances on ring fencing are welcome but, unfortunately, inadequate.• Laid out as a patio garden, with tall fencing all around and various shrubs, plants and an ornamental pond.• From behind the wire fencing, a uniformed guard eyes us with binoculars. 