leipien (“of breads”) + heitto (“throw”) - the resulting circles on the surface of the water look a bit like a row of round breads; a similar idiom is used in Swedish and in Russian (throwing blinis), but it's unclear whether they have a common origin. Note also John Higgins' definition from 1585:
A kind of sport or play with an oister shell or stone throwne into the water, and making circles yer it sinke, etc. It is called a ducke and a drake, and a halfe-penie cake.
| Inflection of leipien heitto (Kotus type 1*C/valo, tt-t gradation) | |||
|---|---|---|---|
| nominative | leipien heitto | leipien heitot | |
| genitive | leipien heiton | leipien heittojen | |
| partitive | leipien heittoa | leipien heittoja | |
| illative | leipien heittoon | leipien heittoihin | |
| singular | plural | ||
| nominative | leipien heitto | leipien heitot | |
| accusative | nom. | leipien heitto | leipien heitot |
| gen. | leipien heiton | ||
| genitive | leipien heiton | leipien heittojen | |
| partitive | leipien heittoa | leipien heittoja | |
| inessive | leipien heitossa | leipien heitoissa | |
| elative | leipien heitosta | leipien heitoista | |
| illative | leipien heittoon | leipien heittoihin | |
| adessive | leipien heitolla | leipien heitoilla | |
| ablative | leipien heitolta | leipien heitoilta | |
| allative | leipien heitolle | leipien heitoille | |
| essive | leipien heittona | leipien heittoina | |
| translative | leipien heitoksi | leipien heitoiksi | |
| abessive | leipien heitotta | leipien heitoitta | |
| instructive | — | leipien heitoin | |
| comitative | See the possessive forms below. | ||