No dram taken by chance (6)
I believe the answer is:
random
'by chance' is the definition.
(I've seen this before)
'no dram' is the wordplay.
'no dram' anagrams to 'RANDOM'.
However, I'm not sure how this is indicated.
'taken' acts as a link.
Can you help me to learn more?
(Other definitions for random that I've seen before include "spot?" , "casual?" , "Wild" , "Lacking a pre-planned pattern" , "without any plan" .)