The Collaborative International Dictionary
Turnpiking
Turnpike \Turn"pike`\, v. t. [imp. & p. p. Turnpiked; p. pr. &
vb. n. Turnpiking.]
To form, as a road, in the manner of a turnpike road; into a
rounded form, as the path of a road.
--Knowles.
Wiktionary
turnpiking
vb. (present participle of turnpike English)