A Roman military unit of 600 soldiers, a tenth of a legion, commanded by tribunes. Paul was in the charge of a centurion who belonged to the Augustan cohort (Acts 27: 1).
Citation for cohort
Citation styles are based on the Chicago Manual of Style, 15th Ed., and the MLA Style Manual, 2nd Ed..
MLA
"cohort." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. May 23, 2013. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e409>.
Chicago
"cohort." In A Dictionary of the Bible. , edited by W. R. F. Browning. Oxford Biblical Studies Online, http://www.oxfordbiblicalcstudies.com/article/opr/t94/e409 (accessed May 23, 2013).