거리 = something... 마실거리 = 마시다 + ㄹ(make 마시다 adjective) + 거리 = something to drink. There are only two commonly used words made with 거리 마실거리 = something to drink, a drink 먹을거리 = something to eat, so food not commonly used but 놀거리 means something to enjoy, 읽을거리 means something to read.. and so on.