Webster's Revised Unabridged Dictionary · 1913

Annex

Annex ({not transcribed}) , transitive verb

[French annexer, from Latin annexus, past participle of annectere to tie or bind to; ad + nectere to tie, to fasten together, akin to Sanskrit nah to bind.]

1.
To join or attach; usually to subjoin; to affix; to append; -- followed by to.
He annexed a codicil to a will. — Johnson
2.
To join or add, as a smaller thing to a greater.
He annexed a province to his kingdom. — Johnson
3.
To attach or connect, as a consequence, condition, etc.; as, to annex a penalty to a prohibition, or punishment to guilt.

Annex , intransitive verb

To join; to be united. — Tooke

Annex ({not transcribed}) , noun

[French annexe, Latin annexus, neut. annexum, past participle of annectere.]

Something annexed or appended; as, an additional stipulation to a writing, a subsidiary building to a main building; a wing.