foot-pad a highwayman who traveled on foot, robbing travelers; a mugger might be the modern equivalent.
inanition lack of strength or spirit; emptiness; weakness.
Chimera a mythical monster, usually depicted as having a lion's head, a goat's body, and a serpent's tail.
Scylla another monster, this one the female personification of a rock, dangerous to ships, on the Italian side of the Straits of Messina, opposite the whirlpool Charybdis (which was personified as Scylla's companion monster).
Cerberus a mythical three-headed dog that guards the gate of Hades.
caitiff a mean, evil, or cowardly person; a wretch.
"By the dog of Egypt" a mild oath; the "dog of Egypt" is Anubis, an Egyptian god pictured as having the head of a dog who leads the dead to judgment. Socrates probably "swears" by this barbarian god to express emphasis without being sacrilegious, as he would be were he to invoke the name of a god of the Hellenes.
