1 cocoon

2 callus

1 callus (patch or hardened skin)

2 corns (on feet)

3 also 老趼

1 silkworm

1 natural silk (secreted by silkworm)

1 broad bean (Vicia faba)

2 fava bean

1 to spin a cocoon around oneself (idiom); enmeshed in a trap of one's own devising

2 hoist by his own petard

1 lit. to spin silk from cocoons

2 fig. to make a painstaking investigation (idiom)

1 lit. to break through a cocoon and turn into a butterfly (idiom)

2 fig. to emerge strong after a period of struggle

3 to get to a better place after going through difficult period

1 to spin a cocoon around oneself (idiom); enmeshed in a trap of one's own devising

2 hoist with his own petard