Noun
A rake with double-edged, crescent-shaped blades, used for slicing through and pulling out thatch from a lawn.
Alternative form of thatch-rake
A tool for combing the straw or similar material in a thatched roof straight, consisting of a straight bar with curved teeth or points.
(heraldry) A representation of such a rake, used as a charge on the field or as a bordure device consisting of a straight line from which periodically project short perpendicular lines with slightly curved tips.
Source: en.wiktionary.orgthatch-rake