green thumb

brown thumb

A lack of skill at growing plants; a poor gardening skill.

butcher's thumb

A dishonest practice in which a butcher uses their thumb to add extra weight to a scale when weighing meat.

Chinese green

Synonym of lokao.

fash one's thumb

To bother oneself; to worry about something.

go green

To implement certain lifestyle changes designed to help one live in a more ecologically friendly way.

God's green earth

The world.

green about the gills

Ill or unwell, especially as indicated by one's appearance.

green as grass

Inexperienced or naive.