technical
adj.— «In trail racing parlance, mud, roots and rocks on the trail are described as a “technical” trail. » —“SRTs again…“ Hungry Ghost’s Daily Diet (Canada) July 30, 2007. (source: Double-Tongued Dictionary)
Further reading
The Very Hungry Caterpillar (Bookshop|Amazon) had an earlier title: A Week with Willie the Worm. This is part of a complete episode. Transcript of “The Very Hungry Caterpillar’s First Title” Here’s another book title that...
Mary from Greensboro, North Carolina, asks about an expression her Canadian mother used when Mary’s room looked particularly messy: A cow couldn’t find her calf in here! The more common A cow couldn’t find its calf in this room! was popularized by...