寿 is in 寿命 (shòumìng, lifespan), 长寿 (chángshòu, longevity), 寿司 (shòusī, sushi — borrowed from Japanese). 祝寿 means to celebrate an elder's birthday.
culture
The character 寿 is often written in decorative calligraphy and displayed at birthday celebrations for the elderly. 寿桃 (shòutáo, longevity peaches) are traditional birthday gifts.
