Tent primarily torn by blade (5)
I believe the answer is:
tepee
'tent' is the definition.
(tepee is a kind of tent)
'primarily torn by blade' is the wordplay.
'primarily' indicates taking the first letters.
'by' means one lot of letters go next to another.
'blade' becomes 'epee' (epee is a kind of blade).
The initial letter of 'torn' is 't'.
't'+'epee'='TEPEE'
(Other definitions for tepee that I've seen before include "Traditional tent of N American aborigine" , "North American Indian tent" , "Wherein Sioux" , "Native American tent" , "Native American dwelling" .)