innards

[in-erdz] /ˈɪn ərdz/
noun, (used with a plural verb)
1.
the internal parts of the body; entrails or viscera.
2.
the internal mechanism, parts, structure, etc., of something; the interior of something:
an engine's innards.
Origin
1815-25; variant of inwards, noun use of inward
British Dictionary definitions for innards

innards

/ˈɪnədz/
plural noun (informal)
1.
the internal organs of the body, esp the viscera
2.
the interior parts or components of anything, esp the working parts
Word Origin
C19: colloquial variant of inwards
Word Origin and History for innards
n.

1825, innerds, dialectal variant of inwards "the bowels" (c.1300); see inward.

Slang definitions & phrases for innards

innards

noun
  1. The viscera; guts, insides, kishkes: got a feeling in my innards it won't work (1825+)
  2. The inner parts or workings; insides: Let's look at the innards of this gizmo and see what's going on (1921+)