I believe the west end of the old N&W (west of Portsmouth) was called 'The Peavine'. The southern most track at the summit of PRR's climb over the Allegheny's was called 'The Slide'.
There's a grade on CP's Havelock Sub in Ontario (branchline from Agincourt to Havelock) around Dranoel that was known as 'Maryanne's Hill' on account of a train hitting Maryanne's cow and their refusal to compensate her for her loss. Not long after trains began stalling on the hill account grease being applied to the rails, and this operating difficulty remedied itself shortly after the CPR gave in and reimbursed her. Oh, and Dranoel is Leonard spelled backwards... named in honor of a member of CPR's engineering department.
CP's nightly run between Lambton (Toronto) and the TH&B's Aberdeen yard (Hamilton, ON) was called 'The Starlight', and CP's Lambton (later Agincourt) to Owen Sound nightly freight was called 'The Moonlight'.