Webster's Revised Unabridged Dictionary · 1913

Chirk

Chirk , intransitive verb

[Compare Chirp, also Creak.]

1.
To shriek; to gnash; to utter harsh or shrill cries. [Obsolete]
All full of chirkyng was that sorry place. — Cheucer
2.
To chirp like a bird. [Obsolete] — Chaucer

Chirk , transitive verb

To cheer; to enliven; as, to chirk one up. [Colloquial New English]

Chirk , adjective

[From Chirk, v. i.]

Lively; cheerful; in good spirits. [Colloquial New English]