1. (Aus.) an Aboriginal; the predecessor of the modern abo n. (1)
|Lingo 10: Far more derogatory expressions persist in Lingo, including nigger, boong, abo (now often shortened to ab), coon and gin.|
2. (US) an Abolitionist.
|letter 28 Feb. The Abs came toward us and we showed fight to them and they backed off. [...] Good gracious the Abs does run.|
|diary 21 Feb. in Alberts (ed.) Rebels on the Rio Grande 1984 43: The Ab’s had gotten in 30 yards of us, and I began to load and shoot as fast as I could. [Ibid.] 22 Feb. 49: We took supper last night on provisions abandoned by the Abs in their flight.|
|(con. 1862)The California Column [online] The rebels, before they left, had publicly announced that the ‘Abs’ (abolitionists ?) would soon take the fair city, which would then be given over to the ravages of a brutal soldiery.|
|(ref. to 1861)A Soldier of the Trails at www.desertusa.co [Internet] On October 1, 1861, only some three months after his 17th birthday, Thomas Edwin Jackson, fired by patriotism, enlisted as a private [...] In his heart, he probably yearned to fight the Abolitionists, or ‘Abs,’ in glorious battles in the east.|
3. an abdominal muscle, usu. in the context of a flat stomach; often in pl.
|Numbers (1968) 66: The relative merits of ‘frog kicks’ for the ‘abs’ as opposed to regular situps.|
|Rent Boy 38: At the gym, pumping lats and abs and pecs.|
|Indep. Real Life 25 July 3: Being slim with small boobs, flat abs.|
|Corrections 95: He repositioned it against his abs and tucked in the sweater.|
|Rubdown [ebook] Spent the rest of the time lifting free weights and working on my abs.|
|Sydney Morning Herald 27 Dec. [Internet] Everyone wants great skin and flat abs.|
|Crongton Knights 227: ‘Queen Belly Blender can stir up her abs like a roundabout full of hot-wheeling cabs!’.|
4. attrib. use of sense 2.
|Snitch Jacket 165: What you need is some ab work [...] some military presses, quads, lats, and glutes.|
5. (Aus.) abalone.
|Something Fishy (2006) 33: Some desperado with several grand of illegal ab in one hand and a diving knife in the other.|