pittle
/ˈpɪtl/verb
1 [no object] To spend time in trifling activities, to potter around.
2 [no object] To urinate; = piddle. Also in extended use. Now English regional (chiefly northern ).
Origin
Mid 16th century; earliest use found in Roger Ascham (d. 1568), author and royal tutor. Apparently a variant of piddle.