[count] 1 a : a person who leads or directs other people on a journey
▪ We hired a guide for our trip to the mountains. ▪ a river guide
b : a person who shows and explains the interesting things in a place
▪ a museum guide ▪ a tour guide 2 : a person who helps to direct another person's behavior, life, career, etc.
▪ He was my friend and my guide in the early years of my career. 3 : something that helps to direct a person's actions, thoughts, etc.
▪ They used the stars as a guide to find their way back. ▪ If past experience is any guide, we're in for a long and difficult project. ▪ Let your conscience be your guide. [=do what your conscience says is right] 4 : a book, magazine, etc., that provides information about a particular subject
▪ a street guide ▪ The book is intended to be a guide for new parents. ▪ a dining/restaurant guide — often + to ▪ a guide to teenage slang ▪ I bought him a guide to Poland. — see also field guide 5 Guide Brit : girl guide