From Old Irish mullach.
mullach m (genitive singular mullaigh, nominative plural mullaí)
- crown (topmost part of the head)
- Synonym: baithis
- (geology) eminence (elevated land area or hill)
- ridge (highest point on a roof)
- summit (top of a mountain)
|Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.
- C. Marstrander, E. G. Quin et al., editors (1913–76), “mullach”, in Dictionary of the Irish Language: Based Mainly on Old and Middle Irish Materials, Dublin: Royal Irish Academy, →ISBN
- “mullaċ” in Foclóir Gaeḋilge agus Béarla, Irish Texts Society, 1st ed., 1904, by Patrick S. Dinneen, page 502.
- "mullach" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.
- Entries containing “mullach” in English-Irish Dictionary, An Gúm, 1959, by Tomás de Bhaldraithe.
- Entries containing “mullach” in New English-Irish Dictionary by Foras na Gaeilge.