Calf muscle

• A broad flat muscle in the calf of the leg under the gastrocnemius muscle

WordNet Word definitions in WordNet
n. a broad flat muscle in the calf of the leg under the gastrocnemius muscle [syn: soleus muscle ]

Wiktionary Word definitions in Wiktionary
n. (context anatomy English) A broad, flat muscle that extends behind the gastrocnemius along the back of the calf

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
muscle of the calf of the leg, 1670s, Modern Latin, from Latin solea "sole" (see sole (n.1)). So called for its flatness.