From Latin 'coquina' (cooking place), from PIE *pekw- (to cook) — same root as 'cuisine' and 'biscuit' (twice-cooked).
A room or area where food is prepared and cooked.
From Old English 'cycene' (kitchen), from Proto-West Germanic *kokinā, from Vulgar Latin *cocina, from Latin 'coquina' (kitchen), from 'coquere' (to cook), from PIE *pekʷ- (to cook, to ripen). The PIE root *pekʷ- is remarkably widespread: it gives Sanskrit 'pacati' (he cooks), Greek 'peptein' (to cook, to digest — source of 'dyspepsia') and Latin 'coquere' with its derivatives 'cook', 'cuisine', 'biscuit' (bis + coctus, twice-cooked), and 'apricot' (via Arabic from Latin 'praecoquum', early-ripening). The Latin word entered Germanic languages
'Kitchen,' 'cuisine,' 'cook,' 'biscuit,' and 'precocious' all come from Latin 'coquere' (to cook). A kitchen is a cooking room. Cuisine is the art of cooking. A biscuit is 'twice-cooked' (bis + coctus). And 'precocious' means 'pre-cooked' — ripened before the normal time, as if nature cooked the child faster