n. 1 advanced or detached part of a fortification. 2 work done off the premises of the firm etc. which supplies it. o outworker n. (in sense 2). ouzel ru:z(a)1/ n. (also ousel) 1 (in full ring ouzel) whitebreasted thrush. 2 (in full water ouzel) diving bird; dipper. [Old English, = blackbird]