What does "squeak" mean in slang?

In slang, squeak has several meanings beyond the literal high-pitched sound. One common slang meaning is to inform on someone or to confess, similar to to squeal, as in he squeaked to the cops, meaning he snitched or told on others. In that sense, a squeak is an informer. Another slang meaning is to barely succeed or get through by a narrow margin, as in he squeaked by or squeaked through the exam, meaning he passed by just one point. In sports, to squeak out a win means to win narrowly. In some contexts, squeak can mean to complain in a high-pitched way, or to be a small insignificant person, as in pipsqueak. In British slang, squeak can refer to a small amount, as in not a squeak left. In drug slang, squeak is rarely used. In gaming, a squeaker often refers to a young player with high-pitched voice, not to be confused with squeak. The phrase tight squeak means a close call or narrow escape. So slang uses of squeak revolve around informing, barely succeeding, or making a small complaint, and it often carries a sense of smallness, narrowness, or high-pitched annoyance.