A smallholding or piece of land with a house. – Cf. Toft and croft
From Alwalton Manor, 1279 (Medieval Sourcebook):
Cottars. Henry, son of the miller, holds a cottage with a croft which contains 1 rood, paying thence yearly to the said abbot 2s. Likewise he works for 3 days in carrying hay and in other works at the will of the said abbot, each day with I man and in autumn I day in cutting grain with I man.
*Source: A Dictionary of Medieval Terms & Phrases by Christopher Coredon with Ann Williams