A goitre is an enlarged thyroid gland. A goitre can mean that all the thyroid gland is swollen or enlarged, or one or more swellings or lumps develop in a part or parts of the thyroid.The thyroid gland is in the lower part of the front of the neck. It lies just in front of the trachea (windpipe). It has a right and left lobe which are connected together by a narrower band of thyroid tissue. (It is roughly the shape of a butterfly.) You cannot usually see or feel a normal thyroid gland. If the thyroid enlarges it causes a swelling in the neck which you can see – a goitre.