West African country — old British gold coin (6)
I believe the answer is:
guinea
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">west african country</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(country in West Africa)</span><br/ ><br/ >'<span class="explanation-format__original">old british gold coin</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for guinea that I've seen before include "twenty one shillings" , "One pound and fivepence" , "so-called pig that's experimentally tested?" , "Old money and pig" , "Coastal region in West Africa, equal to 21 shillings" .)