Landowner left daughter taking in broadcast (5)
'landowner' is the definition.
(Scottish term for a landowner)
'left daughter taking in broadcast' is the wordplay.
'left' becomes 'l' (common abbreviation).
'daughter' becomes 'd'.
'taking in' means one lot of letters goes inside another.
'broadcast' becomes 'air' ('air' can be a synonym of 'broadcast').
'ld' enclosing 'air' is 'LAIRD'.
(Other definitions for laird that I've seen before include "Scot. landowner", "He's landed in Scotland", "Scottish squire", "Scots landowner", "Estate landowner".)