A small mark used in Hebrew script to distinguish letters otherwise similar (Matt. 5: 18, AV; ‘dot’, REB; ‘little stroke’, NJB); so comes to signify a minute point of legalism.
Citation for tittle
Citation styles are based on the Chicago Manual of Style, 15th Ed., and the MLA Style Manual, 2nd Ed..
MLA
"tittle." In A Dictionary of the Bible. Ed. W. R. F. Browning. Oxford Biblical Studies Online. May 22, 2013. <http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1928>.
Chicago
"tittle." In A Dictionary of the Bible. , edited by W. R. F. Browning. Oxford Biblical Studies Online, http://www.oxfordbiblicalcstudies.com/article/opr/t94/e1928 (accessed May 22, 2013).