Old husband got married with some resistance (3)
I believe the answer is:
ohm
'resistance' is the definition.
(I've seen this before)
'old husband got married' is the wordplay.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'husband' becomes 'h' (abbreviation).
'got' says to put letters next to each other.
'married' becomes 'm' (abbreviation, e.g. in genealogy).
'o'+'h'+'m'='OHM'
'with some' acts as a link.
(Other definitions for ohm that I've seen before include "measure of resistance" , "Unit of electrical resistance (3)" , "A little resistance" , "Physicist" , "physical unit" .)