A reddish-brown clay-like material found in tubular cavities inside tree trunks that have been attacked by termites, especially ones of the genus Porotermes.
Origin
1950s. From mud + the plural of gut.
Definition of mudguts in US English:
mudguts
nounˈmʌdɡʌts
Australian informal
A reddish-brown clay-like material found in tubular cavities inside tree trunks that have been attacked by termites, especially ones of the genus Porotermes.