lower billOur editors are putting together more complete content — check back in about 20 minuteslower billlower bill — noun名詞1. A part of a bird's beak that is underneath the upper part.1.名詞釋義A part of a bird's beak that is underneath the upper part.例句The bird had a yellow spot on its lower bill.2. A legislative proposal introduced in a lower house of parliament.2.名詞釋義A legislative proposal introduced in a lower house of parliament.例句The lower bill passed the House of Commons.