Green’s Dictionary of Slang

1. semen.

1870		Cythera’s Hymnal 17: The last drop of spend had been squeezed from my balls.
1879		in G. Legman Limerick (1953) 273: There was an Archbishop of Rheims / Who played with himself in his dreams. / On his night-shirt in front / He painted a cunt, / Which made his spend gush forth in streams.
1889		C. Deveureux Venus in India I 43: My balls especially pleased her! She said they were so big! She was sure they must be full of spend, and she intended [...] to empty them.
1898		‘Suzan Aked’ The Simple Tale of Suzan Aked 99: Every atom of spend must be removed.
c.1904		A. Crowley Snowdrops from a Curate’s Garden 17: She lolloped a great gob of greasy spend from the throat of her bulging cunt into the gaping mouth of the half-choked ecclesiastic.

2. an orgasm.

1879		‘Sub-Umbra, Or Sport Among The She-Noodles’ in Pearl 1 July 5: I felt her crack deluged with a warm, creamy spend whilst my own juice spurted over her hand and dress in loving sympathy.
1889		C. Deveureux Venus in India I 40: Oh! the relief! the exquisite delight of that spend on my part!
1898		‘Suzan Aked’ The Simple Tale of Suzan Aked 65: Ah, my sweet Susan is growing randy! [...] a little bit of a spend would do her good.
c.1900		‘Ramrod’ Nocturnal Meeting 24: Mamma, I’m afraid you’ve been having a spend.