cuspid
Pronunciation: /ˈkəspid
noun
A tooth with a single cusp or point; a canine tooth.
Origin
mid 18th century: from Latin cuspis, cuspid- 'point or apex'.
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At the cusp of the question of how to handle today's WotD is a peak moment of concern. I would give my eye teeth to avoid the controversy, but alas my cuspids have been replaced with crowns along with all the rest of my choppers.