A servant or attendant to a knight or man-at-arms; especially one who is a member of a man-at-arms's lance and is armed with a custil or coutel. Now historical.
Origin
Late 15th century. Origin uncertain.
Definition of custrel in US English:
custrel
(also coystrell, custril)
nounˈkʌstr(ə)l
A servant or attendant to a knight or man-at-arms; especially one who is a member of a man-at-arms's lance and is armed with a custil or coutel. Now historical.