Green’s Dictionary of Slang

fellow n.

1. constr. with a, oneself, e.g. a fellow ought to get drunk once in a while.

[UK]D. Roberts Military Adventures of Johnny Newcome II 42: Such bl-st-d roads will make a fellow crazy!
[US]‘Jonathan Slick’ High Life in N.Y. I 37: A noise that was enough to make a feller’s teeth jump out of his head.
[UK]T. Hughes Tom Brown’s School-Days (1896) 270: It’s deuced hard that when a fellow’s really trying to do what he ought, his best friends’ll do nothing but chaff him.
[US]G.W. Whitman in Civil War Letters 16 Aug. 102: We have had full accounts of the procedings [sic] of the mob in New York, and its almost enough to make a fellow ashamed of being a Yorker.
[UK]Old Hunks in Darkey Drama 5 44: If it was on’y a grocery now [...] a fellow could collar de stock!
[UK]M.E. Kennard Girl in the Brown Habit I 15: It makes a fellow long for a real good bit of stuff.
[UK]Boy’s Own Paper 6 Nov. 86: Just you shut up now, and let a fellow go to sleep.
[UK]E. Pugh Harry The Cockney 159: Can’t you listen to a fellow when he is talking sense?
[US]Hecht & MacArthur Front Page 61: Jesus! Why didn’t you tell a fellow!
[US]J. Steinbeck Grapes of Wrath (1951) 344: A fella got to eat.
[UK]‘Frank Richards’ Billy Bunter at Butlins 83: I say, you fellows, don’t hike off while a fellow’s talking to you!

2. a person, male or female.

[UK]Dickens Old Curiosity Shop (1999) 264: Sally found you a second-hand stool, sir [...] She’s a rare fellow at a bargain, I can tell you.
[UK]Wild Boys of London I 151/1: Ikey Bob was good at kicking, and, having on a thick boot with a toe-plate, he punished a fellow’s shins to any extent.
[Scot]Dundee, Perth [,,,] People’s Jrnl 6 Aug. 3/5: ‘Violet’ talks of ‘fellows’ and it sounds decidedly vulgar.
[US]C. Stoker Thicker ’n Thieves 269: ‘Had no idea she was a whore. Every time I came to town after that, I’d look her up and go out with her. I thought she was a swell fellow’.
[Aus]B. Ellem Doing Time 111: I did a few years with him, and he’s a top fella.

3. (also felly) one’s husband or regular male partner.

[US]Lantern (N.O.) 9 July 3: My feller tells me that Watermeyer [...] is looking for a fuss.
[US]H. Hapgood Autobiog. of a Thief 59: I was Mamie’s first ‘fellow’.
[UK]H.G. Wells Kipps (1952) 51: It is not quite the thing to walk abroad with a ‘feller’, much more to ‘spoon’ with him.
[Aus]‘Banjo’ Paterson Shearer’s Colt 125: I know the little felly.
[UK]Eve. Standard mag. 23 Feb. 42: My fella was impressing me, picking winners and accumulating wodges of crumpled fivers.

4. (US gay) a lesbian.

[UK]J. Colebrook Cross of Lassitude 103: I can walk in silk stockings if I want – it don’t make me any less a feller!
[US]B. Rodgers Queens’ Vernacular 70: any gay woman [...] fellow.

5. (US gay) an effeminate homosexual.

[US]B. Rodgers Queens’ Vernacular 73: stereotype effeminate homosexual [...] fellow (hetero sl).

In compounds

fellow over the wall (n.)

(UK und.) a receiver.

[UK]Thieves Slang ms list from District Police Training Centre, Ryton-on-Dunsmore, Warwicks 4: Fellow over the wall: receiver of stolen property.
head fellow (n.)

(UK und.) a senior officer of the C.I.D.

[UK]Thieves Slang ms list from District Police Training Centre, Ryton-on-Dunsmore, Warwicks 5: Headfellow: C.I.D. Inspector in Charge.