Sentence:  Women are allowed to play some small part in the <WSD>smelt</WSD> if they are breastfeeding or post-menopausal (van der Merwe and Avery, 1988). <!-- Confused? So is Ms. Moore. The smelt is considered allegorical for the female reproductive process, but woman who are pregnant or capable of pregnancy are considered detrimental to the smelt, so can't participate. --> 
Meaning of the word marked with <WSD> tags:  Any of the various liquids or semi-molten solids produced and used during the course of such production.