Analogue

1. n. A species or genus in one country closely related to a species of the same genus, or a genus of the same group, in another: such species are often called representative species, and such genera, representative genera.
2. n. That which is analogous to, or corresponds with, some other thing.
3. n. A word in one language corresponding with one in another; an analogous term; as, the Latin “pater” is the analogue of the English “father.”
4. n. An organ which is equivalent in its functions to a different organ in another species or group, or even in the same group; as, the gill of a fish is the analogue of a lung in a quadruped, although the two are not of like structural relations.
5. n. A species in one genus or group having its characters parallel, one by one, with those of another group.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.