What is "schoolie"

alt. 1 (context Australia English) A senior school student, especially a school-leaver, engaged in unsupervised celebrations during schoolies week. 2 (context Australia English) A schoolteacher. 3 (context UK military English) An education officer. 4 (context US English) A bass that swims in a school. n. 1 (context Australia English) A senior school student, especially a school-leaver, engaged in unsupervised celebrations during schoolies week. 2 (context Australia English) A schoolteacher. 3 (context UK military English) An education officer. 4 (context US English) A bass that swims in a school.