Lewis Short
(verb) : extento, āre, id.
* To stretch out, extend (ante- and post-class.).
* Lit.: nervos,Lucr. 3, 490: humeros angustos,Amm. 22, 14.
* Trop.: vires alieno ostio,i. e. to exert, try,Plaut. Bacch. 4, 2, 3: quid tu venisti huc te extentatum?id. Most. 3, 1, 66, v. Ritschl ad h. l.
Charlton T. Lewis, Charles Short, A Latin Dictionary