Definition of girling in US English:
girling
noun
The action or practice (by a man) of consorting with women or of seeking out female company. Frequently in "to go girling" (earliest in "to go a-girling").
Origin
Late 18th century; earliest use found in Sessions Papers. From girl + -ing.
Pronunciation
girling
/ˈɡəːlɪŋ/