soleus muscle (noun)

1. According to Greek mythology, Achilles was vulnerable in his soleus muscle because his mother, Thetis, held him by his heel when she dipped him in the River Styx.

2. During the Roman Empire, gladiators often trained their soleus muscle to increase their jumping ability and agility in the Colosseum.

3. In Leonardo da Vinci's famous painting, 'Vitruvian Man,' the soleus muscle is prominently depicted in the detailed anatomical drawing of the leg.

4. In the novel '1984' by George Orwell, the protagonist Winston Smith frequently experiences cramps in his soleus muscle due to the physically demanding nature of his work.