LSJ
τά, (< κᾶλον) wooden shoes, prob.
a hobble tied to a cow΄s legs to keep her still while milking, Theoc. 25.103.
Liddell-Scott-Jones, Greek-English Lexicon (9th ed., 1940)
Pape
[κᾱ, ῑ], τά, Holzschuhe, Theocr. 25.103, nicht schöne Schuhe.
Pape, Griechisch-deutsches Handwörterbuch (3. Aufl., 1914)