Most often appears in fixed compounds: 妙语连珠 ('witty remarks like pearls on a string'), 连珠炮 ('rapid-fire'), 连珠箭 ('arrows in succession'). Anything that comes one after another with no gaps.
culture
连珠 (Renju in Japanese) is the modern competitive form of 五子棋 (gomoku), played on a board like Go's, won by getting five stones in a row. Standardized in Japan in the 1890s with extra rules to balance black's first-move advantage.
