Definitions of bald:

• verb:   grow bald; lose hair on one's head

  Example: "He is balding already"

• adjective:   without the natural or usual covering

  Example: "A bald spot on the lawn"

• adjective:   with no effort to conceal
• adjective:   lacking hair on all or most of the scalp

  Example: "A bald pate"

• name:  A surname (very rare: popularity rank in the U.S.: #23240)