1. （建筑）大而无当的，格局凌乱的
A rambling building is big and old with an irregular shape.

2. （讲话或写作）冗长含糊的，杂乱无章的
If you describe a speech or piece of writing as rambling, you are criticizing it for being too long and very confused.

1. of a path e.g.

e.g. meandering streams
rambling forest paths
the river followed its wandering course
a winding country road

Synonym: meandering(a)wandering(a)winding

2. (of e.g. speech and writing) tending to depart from the main point or cover a wide range of subjects

e.g. amusingly digressive with satirical thrusts at women's fashions among other things
a rambling discursive book
his excursive remarks
a rambling speech about this and that

Synonym: digressivediscursiveexcursive

3. spreading out in different directions

e.g. sprawling handwriting
straggling branches
straggly hair

Synonym: sprawlingstragglingstraggly