An animal whose embryo develops in an amnion and chorion and has an allantois; a mammal, bird, or reptile. (Amnion: the innermost membrane that encloses the embryo of a mammal, bird, or reptile. Chorion: the outermost membrane that … etc. Allantois: the fetal membrane lying below the chorion in many vertebrates, formed as an outgrowth of the embryo's gut.)
 The inherent nature or essence of someone or something.
 Little known; abstruse. From a French word meaning "hidden".
 A marsh or boggy place.
 Two unrelated murders linked to Brighton, England in 1934. In both, the dismembered body of a murdered woman was placed in a trunk.
 A street in the City of Westminster in London, England which has been noted since the 19th century for its large number of private specialists in medicine and surgery.
 That would be "hydrogen chloride", HCl, which when it gets wet forms hydrochloric acid.
 …And when it does, you get, among other things, chlorine monoxide. The chemical reaction of Cl + O3 (ozone) forms ClO + O2, and depletes the ozone layer.
 Stubbornly or willfully disobedient to authority.
 Or "Jahannam". This is the Arabic Language equivalent to Hell. The term comes from the Hebrew Gehinnom, originally the name of a valley outside Jerusalem.
 In music, a "thirty-second note", 1/32 the length of a "semibreve", or "whole note": what you or I would call "a really short note."
 Or "mahseer", a fish of the genera Tor, Neolissochilus, and Naziritor in the family Cyprinidae (carps), Tor being the most common.
 "Mleccha" means "non-Vedic", "barbarian" — the Hindu equivalent of a Jewish "shiksa".
 One of the most desolate parts of the Sahara desert. It is situated along the borders among Algeria, Niger and Mali, west of the Hoggar mountains.
 "Deprecate" means "to express earnest disapproval of."
 In this spelling, this means "enlightened" (bodhi) "existence" (sattva). Traditionally, a bodhisattva is someone who, motivated by great compassion, has generated bodhicitta, a spontaneous wish to attain Budhahood for the benefit of all sentient beings.
 An English philosopher (1820 — 1903) who developed an all-embracing conception of evolution as the progressive development of the physical world, biological organisms, the human mind, and human culture and societies.
 A hallucinogenic plant of the mandrake family, whose root resembles a human figure. Long used in magic, it supposedly screams when uprooted. Sometimes it is also said that the scream kills whoever hears it.
 A propitiatory or sacrificial rite in which a person is suspended above ground by hooks through their back and swung about.
 Also called suttee, a religious funeral practice in which a recently widowed woman immolates herself on her husband's funeral pyre.
 A theological doctrine holding that during the Christian sacrament, the fundamental substance of the body and blood of Christ are present alongside the substance of the bread and wine.
 Lapsarianism is the set of Calvinist doctrines describing the theoretical order of God's decree (in his mind, before Creation), in particular concerning the order of his decree for the fall of man and reprobation. Supralapsarianism is the view that God's decrees of election and reprobation logically preceded the decree of the fall.
 Here, Crowley uses this metaphor in an aberrant sense. "Old School Tie" refers to what we would call the "old boys' network". It means specifically the practice of wearing the tie of one's school, as a means of being recognized (and thus helped) by others.
 This is a guess on my part, but here I think Crowley intends the Broad Arrow symbolism to refer to the fact that in the Australian colonies, it was used to mark government property — particularly prisoners' clothing. However, I've also seen one source report it as a synonym for the fleur-de-lis.
 Latin: Read! Judge! Be silent!