Origin: 1855–60, Americanism; prob. folk-etymological sp. of New York D *binnekil, equiv. to D binne(n) inner, interior (see ben1) + kil channel; see kill2
bin·na·cle (bĭn'ə-kəl) n. A case that supports and protects a ship's compass, located near the helm.
[Alteration of Middle English bitakille, from Old Spanish bitácula or from Old Portuguese bitácola, both from Latin habitāculum, habitation, from habitāre, to inhabit; see ghabh- in Indo-European roots.]