The crossword solutions for the term COS ___, CT are LETTUCE (7 letters), Lyme (4 letters), and Resp (4 letters). LETTUCE is a leafy green vegetable that is commonly used in salads and sandwiches. Lyme is a disease caused by bacteria that is spread by ticks. Symptoms of Lyme include fever, headache, fatigue, and a skin rash. Resp is short for respiratory, which refers to the organs and processes involved in breathing.