Eton slang. [f. SOCK sb.5] a. trans. To treat (one) to sock; to present or give (something) to one. b. intr. To buy or consume sock.
1850. N. & Q., 1st Ser. II. 44/2. That a schoolfellow would sock him, i. e. treat him to sock at the pastrycooks.
1883. Brinsley-Richards, Seven Years at Eton, v. 38. We Eton fellows, great and small, socked prodigiously.
1889. C. T. Buckland, in Macm. Mag., Nov., 65/1. My governor socked me a book.