Is at the knock out in the park
- knock → Castleknock Hill and Windmill Hill (now Mount Hybla) are identified with Finn MacCool's (and HCE's) two feet
- The Sigla of Finnegans Wake → p. 13n: "In the time of D'Alton, The History of the County of Dublin (Dublin, Hodges & Smith, 1838), p. 641, these were prominent, one crowned with a tower, the other with a castle"
- knock → hill (Irish cnoc, "hill"; Anglo-Irish knock, "hill")
- Knockmaroon: (Irish Cnoc na Marbhán, "the hill of the corpses") a locality in the northwest corner of Phoenix Park
- knock: to knock down → Humpty Dumpty
- knock out: to knock someone out, to render them unconscious → in Sheridan Le Fanu's 1861 novel The House by the Churchyard, a character is attacked and left for dead in the Hollow in the Phoenix Park
- knock out: a knock-out in a boxing match