Promise jointly kept by law and order? (4)
I believe the answer is:
word
This clue could be a double definition.
'promise jointly kept by law' is the first definition.
'word' can be an answer for 'promise' (as in 'I give you my word'). I am unsure of the 'jointly kept by law' bit.
'order?' is the second definition.
(word is a kind of order)
'and' acts as a link.
Can you help me to learn more?
(Other definitions for word that I've seen before include "Brief statement" , "Element of language" , "Device for typing, data storage etc" , "The Bible is the . . . . of God" , "Term" .)