Noun
triceps surae
(anatomy) The combination of the gastrocnemius and soleus muscles.
Conversely, a mid/forefoot strike has been associated with greater efficiency and lower injury risk due to the triceps surae being used as a lever system to absorb forces with the muscles eccentrically rather than through the bone. Source: Internet
The triceps surae is the primary plantar flexor and its strength becomes most obvious during ballet dancing. Source: Internet