Ram a dry component part of a mast spar (7)
I believe the answer is:
yardarm
'part of a mast spar' is the definition.
'yardarm' can be an answer for 'spar' (thesaurus). I am not sure about the 'part of a mast' bit.
'ram a dry component' is the wordplay.
'component' is an anagram indicator (I've seen 'components' mean this).
'ram'+'a'+'dry'='ramadry'
'ramadry' anagrammed gives 'YARDARM'.
Can you help me to learn more?
(Other definitions for yardarm that I've seen before include "Part of ship's spar" , "First drink, when sun over it" , "Either end of a sail beam" , "Beam on board" , "that one finds in marina" .)