Variant of Darrell. Like its variant Daryl, it is occasionally borne by women, no doubt by analogy with names such as Cheryl. A recent influence on the girl's name is the actress Daryl Hannah (b. 1960).
Scottish and northern English: topographic name for someone who lived by a cattleshed, Middle English byre, or a habitational name with the same meaning, from any of several places named with Old English bȳre, for example Byers Green in County Durham or Byres near Edinburgh.