Green’s Dictionary of Slang

dot v.

1. (also dotty) to punch someone, esp. in the eye.

1881		Newcastle Courant 2 Sept. 6/5: Did you hear he dotted the Raven a while ago?
1889		R.W. Coan ‘In The Future’ 🎵 On the lodger I am sure to keep my eye, / And if with her I spot him, on the ‘boco’ I shall dot him.
1892		E.E. Rogers [perf. Marie Lloyd] G’arn Away 🎵 And a chap that thinks he’s a-goin’ to lark about with me, / Stands a chance of gittin’ dotted in the eye.
1898		W. Pett Ridge Mord Em’ly 105: Why didn’t you dot ’em one?
1907		Gem 30 Mar. 6: Dot him on the boko, Jimsen.
1916		C.J. Dennis ‘War’ in Moods of Ginger Mick 24: ’E sprags a soljer bloke ’oo’s passin’ by, / An’ see: ’e’d like to dot ’im in the eye.
1920		B. Cronin Timber Wolves 327: Now you leggo before I dot you one.
1928		‘Sapper’ Female of the Species (1961) 37: She dotted him good and hard with that spanner.
1937		D.L. Sayers Busman’s Honeymoon (1974) 230: Unless you prefer to believe that Noakes made improper advances to Mrs Ruddle and she dotted him one.
1945		G. Fairlie Capt. Bulldog Drummond 175: I dotted him one, extremely hard, with his own blunt instrument — in the shape of his own poker.
1976		S. Naipaul Adventures of Gurudeva 48: I won’t dotty me stick on you.
1983		(con. 1940s) D. Nobbs Second From Last in the Sack Race 70: Come on girls! Come on chaps! / Dot Hitler on the napper.
1992		G.P. Pelecanos Firing Offense 61: ‘I was out last night, things got a little crazy. I got my eye dotted in a bar’.

2. (Aus.) to inscribe, to write.

1894

Truth (Sydney) 11 Feb. 7/1: Got no change now, I’ll just dot them [i.e. drinks] on the slate.

In derivatives

dotted (adj.)

having a black eye.

1909

J. Ware Passing Eng. of the Victorian Era 116/1: Dotted (Tavern, 19 cent.). Blackeyed. To ‘dot’ a gentleman is to punctuate him emphatically with a black-eye. The chucker-out he dotted, / He got so blooming tight.

SE in slang uses

In phrases

dot the ‘i’ (v.) [the anus is the dot n.² (4), the penis the eye (although this is different from the usual use of eye n. (4) or -eye sfx to mean anus)]

(US gay) to have anal intercourse.

1972		B. Rodgers Queens’ Vernacular.
1989–2003		R.O. Scott Gay Sl. Dict. 🌐 anal intercourse: [...] Syn: dot the ‘i’.