Acrospire

1. v. i. To put forth the first sprout.
2. n. The sprout at the end of a seed when it begins to germinate; the plumule in germination; — so called from its spiral form.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.