Late 16th century; earliest use found in Patrick Hume (fl. 1580–1621). Apparently from runch + -ock. In spite of the appearance of some of the forms, no potential Scottish Gaelic etymon has been identified.
Definition of runchick in US English:
runchick
nounˈrʌn(t)ʃɪk
Caithness, Shetland, Orkney, Scottish
= runchie.
Origin
Late 16th century; earliest use found in Patrick Hume (fl. 1580–1621). Apparently from runch + -ock. In spite of the appearance of some of the forms, no potential Scottish Gaelic etymon has been identified.