Definition of chirking:
(v) :
(intransitive, especially as "chirk up") To become happier.
(v) :
(transitive, especially as "chirk up") To make happier.
(v) :
To make the sound of a bird; to chirp.
(adj) :
(colloquial, US, chiefly New England) lively; cheerful; in good spirits
(n) :
A small town and community with a town council in Wrexham borough county borough, Wales (OS grid ref SJ2937).