mudding1
/ˈmʌdɪŋ/noun
Chiefly Canadian. The filling of cracks in the walls of a house or log cabin with mud. Also concrete : the mud itself.
Origin
Mid 17th century (in an earlier sense). From mud + -ing.
MUDding2
/ˈmʌdɪŋ/(also MUDDING) Computing
noun
The playing of MUD computer games; this activity as a pastime or interest.
Origin
1990s; earliest use found in Usenet (newsgroups). From MUD + -ing.