› COMMERCE to put something into a container: pack sth in/into sth The fruit is finally packed into wooden crates for shipping.
› to put material around something to protect it before putting it into a container: pack sth in sth The ornaments were carefully packed in soft material before being placed in the box.
› to put food in a particular substance so that it does not decay: pack sth in sth sardines packed in oil
› if people pack a place, they fill it completely: Staff packed the auditorium for her farewell speech.
pack a punch informal › to have a great effect or influence: This was news that packed a punch in the business community. Her keynote address packed a powerful punch. It was a small company but one that packed a big punch.