plump

the sound of a sudden heavy fall

drop sharply; "The stock market plummeted"

set (something or oneself) down with or as if with a noise; "He planked the money on the table"; "He planked himself into the sofa"

make fat or plump; "We will plump out that poor starving child"

give support (to) or make a choice (of) one out of a group or number; "I plumped for the losing candidates"

sufficiently fat so as to have a pleasing fullness of figure; "a chubby child"; "pleasingly plump";

straight down especially heavily or abruptly; "the anchor fell plump into the sea"; "we dropped the rock plump into the water"