The linguist explained how niners are used in radio communication.

Tower, Echo-Golf, request taxi to runway niner.

He handed me the niner and asked if it would fit the cabinet.

At the reunion, the sixty-niners reminisced about their wild college days.

The twenty-niners organized a surprise birthday party for their friend who was turning thirty.

The forty-niners hurried to the riverbanks when news of the strike spread.

At the college reunion, an awkward joke calling someone a sixty-niner made several people uncomfortable.

The museum's new exhibit included a replica cabin and tools used by a forty-niner during the California Gold Rush.

He rode his twenty-niner over roots and rocks without losing momentum.