Green’s Dictionary of Slang

1. (also dreul) spittle; thus drooled, adj. describing the substance.

1867–9		Illinois Agricultural Society Transcripts VII 179: The drooled matter is filled with air bubbles, and may be described as a ‘frothy’ drool [DA].
1871		J.H. Trumbull in Ellis Early Eng. Pron. (1874) IV 1220: Drool or dreul. For ‘drivel,’ used everywhere by mothers and nurses [DA].
1944		A. Kapelner Lonely Boy Blues (1965) 9: Wipe the drool from your lips.
1952		in G. Legman Limerick (1953) 356: He climbed on a haystack / Overlooking a racetrack, / And dived in all covered with drool.
1990		J. Wambaugh Golden Orange (1991) 258: Can you catch AIDS from slobber and drool?
2000		M. Amis Experience 156: Never mind all the gagging and retching [...] nor the sudden Niagaras of drool.

2. (also drule) nonsense, rubbish.

1900		E.H. Babbitt ‘College Words and Phrases’ in DN II:i 33: drool, n. Nonsense.
1911		H.S. Harrison Queed 84: Something loose in his belfry, as ye might have surmised from them damfool tax-drools.
1918		H.V. O’Brien diary 7 Mar. in Wine, Women and War (1926) 41: Drool by Col. Y.
1919		H.V. O’Brien diary 11 Jan. in Wine, Women and War (1926) 306: Drool about ‘duties’ [...] Usual R.O.T.C. drip.
1931		(con. 1918) E.W. Springs Rise and Fall of Carol Banks 133: You just struck a lucky time to sling your ink and found a soft-minded editor to buy your drool.
1943		H.A. Smith Life in a Putty Knife Factory (1948) 130: They spew out hogwash and sheep-dip from day to day, and they accept large sums of money for their daily drool.
1955		B. Schulberg On the Waterfront (1964) 192: The funny part is, you really believe that drool.
1966		C. Stead Cotters’ England (1980) 287: She cackled, ‘Eh, eh, I made you stop the sweet drool.’.
1997		‘Danger Overhead Junkie’ [poem] at cgsng.com 🌐 He wants a gun himself. That’s his drool / My deciphering, from the nonsense ranting of the fool.

3. vaginal secretions.

1939

H. Miller Tropic of Capricorn (1964) 231: Then I lay with my head between her legs and lapped up the drool that was pouring from her.

4. (also drule) a socially unacceptable person.

1902		Boston Globe Sun. Mag. 21 Dec. 7–8: If in recitation a student makes a fair impression he is termed a ‘wiz.’ If he fails it is a ‘drule.’.
1943		‘Whitman College Sl.’ in AS XVIII:2 Apr. 154/1: drizzle puss, drone, drool, drip. These vulgar monosyllables are applied to anyone not up to par socially.
1960, 1975		Wentworth & Flexner DAS 163/2: drool A boy who is not approved of; a drip.