As a Verb or Adjective: 1. To POLLUTE means to make water, air or land dirty and dangerous to live in or to use, especially with poisonous chemicals or sewage. Note: 1. The signer in the video is giving an Auslan explanation of the English term POLLUTE. There appears to be no commonly used Auslan sign for POLLUTE (but some signers represent this visually using depicting signs, once they have established the topic). If you know a sign for POLLUTE used by you or other Auslan users (deaf people or interpreters) please go to "Report missing sign" and supply details. Thank you.