to sit down hard; to make someone sit down hard (see Karttunen)
for a price to decline; to descend something steep (see Karttunen)
something bobtailed (see Karttunen)
to spank someone (see Karttunen)
to be or become the foundation, to have a beginning or a start at being/existing
to commence; to introduce; to start something (see Molina); also: to found, establish [e.g. a town]
the beginning, the start, the foundation of something (see Molina and Karttunen)
black widow spider (see Karttunen)