tea-leaf

tea-leaf
n (pl -leaves) leaf of tea, esp after tea has been made （泡过的）陈茶叶, 茶叶渣
    throw away the old tea-leaves 倒掉陈茶叶
    tell sb's fortune from the tea-leaves in his cup 藉察看某人杯中的陈茶叶为其占卜.

牛津英汉双解词典