Aunt Jennifer's tigers prance across a screen,
Bright topaz denizens of a world of green.
They do not fear the men beneath the tree;
They pace in sleek chivalric certainty.
Aunt Jennifer's fingers fluttering through her wool
Find even the ivory needle hard to pull.
The massive weight of Uncle's wedding band
Sits heavily upon Aunt Jennifer's hand.
When Aunt is dead, her terrified hands will lie
Literally, Aunt Jennifer is having trouble with her work because of the heavy ring. 
 Figuratively, Aunt Jennifer is having a hard time pulling the ivory through because she is nervous. 
 Ivory is symbolic, because that material comes from animals who have been hunted by men.
Aunt Jennifers Tigers