enroll

verb

1. (transitive)To enter (a name, etc.) in a register, roll or list

   “All the citizens capable of bearing arms enrolled themselves.”

   “An unwritten law of common right, so engraven in the hearts of our ancestors, and by them so constantly enjoyed and claimed, as that it needed not enrolling.”

2. (transitive)To enlist (someone) or make (someone) a member of.

   “They were eager to enroll new recruits.”

3. (intransitive, reflexive)To enlist oneself (in something) or become a member (of something).

   “Have you enrolled in classes yet for this term?”

4. (intransitive, reflexive)To enlist oneself (in something) or become a member (of something).
5. (US, intransitive, reflexive)To enlist oneself (in something) or become a member (of something).
6. (Australia, New-Zealand, intransitive, reflexive)To enlist oneself (in something) or become a member (of something).
7. (obsolete, transitive)To envelop; to enwrap.

   “Our quiuering Lances ſhaking in the aire, And bullets like Ioues dreadfull Thunderbolts, Enrolde in flames and fiery ſmoldering miſtes, Shall threat the Gods more than Cyclopian warres, […]”

   “enroll thy memorable name In th’ heart of every honourable dame”

   “So then were nothing lost to man; ⁠So that still garden of the souls ⁠In many a figured leaf enrolls The total world since life began: […]”

8. (intransitive)To curl up into a ball.

   “Many trilobites (e.g.37), including Ampyx priscus (Supplementary Fig. 11) had the capacity to enroll as do modern terrestrial isopods when threatened.”