An organ of a fish, consisting of a membrane supported by rays, or little bony or cartilaginous ossicles, and serving to balance and propel it in the water.
A membranous, finlike, swimming organ, as in pteropod and heteropod mollusks.
A finlike organ or attachment; a part of an object or product which protrudes like a fin
The hand.
A blade of whalebone.
A mark or ridge left on a casting at the junction of the parts of a mold.
The thin sheet of metal squeezed out between the collars of the rolls in the process of rolling.