Definitions of lea:

• noun:   a unit of length of thread or yarn
• noun:   a field covered with grass or herbage and suitable for grazing by livestock
• name:  A female given name (rare: 1 in 5882 females; popularity rank in the U.S.: #665)
• name:  A surname (rare: 1 in 33333 families; popularity rank in the U.S.: #3529)