A small
ornamental object; a
trinket. Knicknacks can be found all over the place at
antique stores,
thrift stores, and those sinister
gift shops you find in
tourist traps. Some people seem to
collect large numbers of them over time and arrange them on
shelves and
mantels in their overfurnished homes.
This probably isn't the knicknack that goes with paddywhack; it's an entirely different concept.