Early-attested site in the Parish of Kirkby Moorside
- Sletholme 1301 LS
- Slehtholme 1386 Riev
- Sl(e)ightholm(e)dale 1538 Riev 1621 NR
'Flat ground near water' v. sletta , holmr , and cf. Barnby Sleights and Sleightholme 135, 305infra .
The first element is from early ON *sleht - (which later became slétta ), and the normal development of this in the dialect would be [sliːt] (v. Sleightholme 305infra ). The modern pronunciation [slɛit] is irregular, and, as Cowling (§§ 149, 172, 226) suggests for some other word, it is a borrowing from RSE.