1832, "surroundings, environment," picked up by De Quincey from French entourage, from Middle French entourer "to surround" (16c.), from Old French entour "that which surrounds" (10c.), from en- "in" (see en- (1)) + tour "a circuit" (see tour). Specific sense of "attendant persons, persons among whom as followers or companions one is accustomed to move" recorded in English by 1860.
entomolite
entomologist
entomology
entomophagous
entoparasite
entourage
entrails
entrain
entrammel
entrance
entrant