cot·tar 
(kätər)
(kätər)n.
1. A medieval villein who occupied a cottage with a small piece of land in return for labor.
2. In Scotland and Ireland, a farm worker who, in return for a cottage, gives labor at a fixed rate when required.
[From Middle English coter, from Old French coter, cotier; akin to Medieval Latin cotārius : Medieval Latin cota, cottage (of Germanic origin and akin to Old English cot, cottage) + Latin -ārius, adj. and n. suff.]