Sentence:  Reduces losses from stomach , hookworm , and nodular <WSD>worms</WSD> by interfering with reproduction of the female worm by reducing the number of eggs laid and essentially rendering all laid eggs sterile . 
Meaning of the word marked with <WSD> tags:  any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae