The term 'neck gland' refers to two glands located in the neck, the thyroid and the thymus. The thyroid is a seven-letter word and the thymus is a six-letter word. The thyroid is a butterfly-shaped gland located at the base of the neck and produces hormones that regulate metabolism, growth, and development. The thymus is a small organ located behind the sternum and plays an important role in the immune system by producing T cells.