A Spire

1. (now rare) The stalk or stem of a plant. [from 10th c.]
2. A young shoot of a plant; a spear. [from 14th c.]
3. Any of various tall grasses, rushes, or sedges, such as the marram, the reed canary-grass, etc.
4. A sharp or tapering point. [from 16th c.]
5. A tapering structure built on a roof or tower, especially as one of the central architectural features of a church or cathedral roof. [from 16th c.]
6. The top, or uppermost point, of anything; the summit. [from 17th c.]
7. (mining) A tube or fuse for communicating fire to the charge in blasting.