Definition of hefted:
(n) :
(uncountable) The feel of the weight of something; heaviness.
(n) :
(uncountable) (dated except UK, dialectal and US) The force exerted by an object due to gravitation; weight.
(n) :
(uncountable) (figurative) Graveness, seriousness; gravity.
(n) :
(uncountable) (figurative) Importance, influence; weight.
(n) :
(uncountable) (US, informal, dated) The greater part of something; the bulk, the mass.
(n) :
(countable) (UK, dialectal) An act of lifting; a lift.