Also spelled ‘guytrash’, this isn’t a term of abuse to describe men; it’s an apparition or spectre in animal-form, or as defined more specifically by Charlotte Brontë in Jane Eyre, a ‘Northern English monster, a horse, mule or large dog which haunted solitary ways and sometimes came upon belated travellers’.

May your path never be crossed by a gytrash.

Source: Charlotte Brontë, Jane Eyre (London: Bounty Books, 2012 (1847)), p. 144