Strong’s Greek
G2762 — keraia
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κεραία
keraia — pronounced ker-ah'-yah
feminine of a presumed derivative of the base of 2768; something horn-like, i.e. (specially) the apex of a Hebrew letter (figuratively, the least particle):--tittle. see GREEK for 2768
2 occurrences in the KJV.
Matthew 5:18
For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.
Luke 16:17
And it is easier for heaven and earth to pass, than one tittle of the law to fail.