Split mechanisms with no name, weirdly (6)
I believe the answer is:
schism
'split' is the definition.
(I know that split can be written as schism)
'mechanisms with no name weirdly' is the wordplay.
'with no' indicates named letters should be taken away.
'weirdly' indicates an anagram.
'mechanisms' with 'name' taken away is 'chisms'.
'chisms' with letters rearranged gives 'SCHISM'.
(Other definitions for schism that I've seen before include "Breach within a Chruch" , "Split over doctrinal beliefs" , "Splinter group" , "Formal division of a church into two" , "Split (usually in church)" .)