'Rectus' definitions:

Definition of 'rectus'

(from WordNet)
noun
Any of various straight muscles

Definition of 'Rectus'

From: GCIDE
  • Rectus \Rec"tus\ (-t?s), n.; pl. Recti (-t?). [NL., fr. L. regere to keep straight.] (Anat.) A straight muscle; as, the recti of the eye. [1913 Webster]