noun, informal - an additional serving of food taken after someone has already had seconds
noun, formal - something that is an unfair or unreasonable burden or inconvenience to someone
verb - to tell or allow someone, especially an employee, to stop working temporarily
adjective, American English, informal - strange, eccentric, or slightly crazy, often in an amusing or charming way.
noun, technical - an old-fashioned long gun used by soldiers before rifles were invented
adjective, American English - someone who is unreliable or behaves in an odd or unpredictable way