Webster's Revised Unabridged Dictionary · 1913

Friendly

Friendly , adjective

[Anglo-Saxon freéndlīce.]

1.
Having the temper and disposition of a friend; disposed to promote the good of another; kind; favorable.
2.
Appropriate to, or implying, friendship; befitting friends; amicable.
In friendly relations with his moderate opponents. — Macaulay
3.
Not hostile; as, a friendly power or state.
4.
Promoting the good of any person; favorable; propitious; serviceable; as, a friendly breeze or gale.
On the first friendly bank he throws him down. — Addison

Friendly , adverb

In the manner of friends; amicably; like friends. [Obsolete] — Shakespeare
In whom all graces that can perfect beauty Are friendly met. — Beau. & Fl

Friendly , noun

1.
A friendly person; -- usually applied to natives friendly to foreign settlers or invaders.
These were speedily routed by the friendlies, who attacked the small force before them in fine style. — E. N. Bennett
2.
(Military) A member of one's own military forces, or of allied forces.