lay up verb8 •To store; to put by.We must lay up enough stores to get us through the winter. •To disable or incapacitate; to confine to bed.He was laid up for six weeks with pneumonia. •To recuperate or rest; to remain in a place.He laid up until recovering from his illness.She's been laid up in Reno for weeks. •To take out of active service.The battleship is presently laid up in Portsmouth Harbour. •To go out of active service.The cruise ship lays up in November for the winter. •To deliberately leave the ball further than necessary from the hole, so as to secure an easier succeeding shot.Rather than try to reach the green, he chose to lay up. •To make a layup with (a basketball)He takes the pass, he drives, he lays it up and in. •(US, slang) To have sex; to have a sexual relationship. formslaid up · laying up · lays up