Webster's Revised Unabridged Dictionary · 1913

Extern

Extern , adjective

[Compare French externe. See External.]

External; outward; not inherent. [Obsolete] — Shakespeare

Extern , noun

[Compare French externe.]

1.
A pupil in a seminary who lives without its walls; a day scholar.
2.
Outward form or part; exterior. [Rare]
3.
same as externe.