Webster's Revised Unabridged Dictionary · 1913

Enlist

Enlist , transitive verb

1.
To enter on a list; to enroll; to register.
2.
To engage for military or naval service, the name being entered on a list or register; as, to enlist men.
3.
To secure the support and aid of; to employ in advancing interest; as, to enlist persons in the cause of truth, or in a charitable enterprise.

Enlist , intransitive verb

1.
To enroll and bind one's self for military or naval service; as, he enlisted in the regular army; the men enlisted for the war.
2.
To enter heartily into a cause, as if enrolled.