bills

A2 · Elementary Countable noun American English

n. pieces of paper money.

n. banknotes or pieces of paper currency.

“She reached into her wallet and pulled out two ten-dollar bills.”

“The cashier carefully counted the stack of twenty-dollar bills before placing them securely in the register.”

B2 · Upper Intermediate Countable noun Law

n. formal plans for new laws that a government is discussing.

n. drafts of proposed laws presented to a legislature for discussion.

“The government is debating several new bills about environmental protection.”

“Parliamentary sessions were extended late into the night as members debated the technical nuances of the proposed education bills.”

B2 · Upper Intermediate Countable noun Science

n. the hard, pointed parts of a bird's mouth.

n. the horny projecting mouthparts of a bird.

“The ducks used their flat bills to search for food in the mud.”

“Ornithologists observed how the different species had evolved specialized bills to access specific types of seeds and insects.”