Latin, meaning: the upper arm / strength. 
Lacertus, more commonly known as eared skinks, is a genus of skinks found in Somalia. ...
• (n.) A bundle or fascicle of muscular fibers.
(lә-sur´tәs) any of various fibrous bands or bundles that attach muscles to other structures.
La·cer'tus (lȧ*sẽr'tŭs) noun ; plural Lacerti (- tī). [ Latin , the upper arm.] (Anat.) A bundle or fascicle of muscular fibers. 
Type: Term Pronunciation: lă-sĕr′tŭs Definitions: 1. A fibrous band, bundle, or slip related to a muscle. 2. Originally the muscular part of the upper limb from shoulder to elbow.
the upper arm / strength.