Webster's Revised Unabridged Dictionary · 1913

Inject

Inject , transitive verb

[Latin injectus, past participle of inicere, injicere, to throw in; pref. in- in + jacere to throw: compare French injecter. See Jet a shooting forth.]

1.
To throw in; to dart in; to force in; as, to inject cold water into a condenser; to inject a medicinal liquid into a cavity of the body; to inject morphine with a hypodermic syringe.
2.
Figuratively: To throw; to offer; to propose; to instill.
Casar also, then hatching tyranny, injected the same scrupulous demurs. — Milton
3.
To cast or throw; -- with on. [Rare]
And mound inject on mound. — Pope
4.
(Anatomy) To fill (a vessel, cavity, or tissue) with a fluid or other substance; as, to inject the blood vessels.
5.
to add in; to insert; to interject; as, to inject a comment into the conversation; to inject humor into a tense situation.