sea legs, to get one's

sea legs, to get one's

To adjust to a new situation. A sailor is said to get his sea legs when he is able to walk steadily despite the rolling and pitching of the vessel. The term was transferred to other kinds of learning experience by 1895, when David Lloyd George used it in a letter: “I have got my sea legs in the House. They now listen to me with deference.”
See also: get, sea