Green’s Dictionary of Slang

ruin’t adj.

1. (US black) pregnant.

[US]Z.N. Hurston Dust Tracks On a Road (1995) 600: It did not take me long to know what was meant when a girl was spoken of as ‘ruint’ or ‘bigged.’.

2. (US black) of a person, unattractive.

[US] ‘Sl. of Watts’ in Current Sl. III:2.
[US]Current Sl. V:2.
[US]E. Folb Runnin’ Down Some Lines 145: Unattractiveness is often characterized in terms that suggest physical pain (she is hurtin’ for certain, scab, ruin’t).