(slang, chiefly imperative) To go away; get lost; scram.

(Australia) Said of a person who is on their provisional driver's licence and displays P-plates on their vehicle; not yet possessing a full driver's licence.

(Australia) Said of a person who is on their learner's permit and displays L-plates on their vehicle; not yet possessing a provisional or full driver's licence.

To quit, to stop engaging in a line of work or type of activity.

To spend time thinking about oneself or one's own interests, especially to the exclusion of others. / Used other than figuratively or idiomatically: see contemplate, navel.

(colloquial, dated) To pay for oneself, not relying on the generosity of others.

(rail transport) The operation of a train without a conductor or guard as a cost-cutting measure; one-man operation.

A single page that summarizes a topic, such as a process, a strategy, a business plan or issue.

(UK, dated, figuratively) to think hard and try to remember something.

Alternative form of cudgel one's brain