Also found in: Medical.
rat-tailalso rat·tail (răt′tāl′)
1. See grenadier.
2. A long, thin length of hair that hangs down the nape of the neck, usually when the rest of the hair is cut short.
adj. also rat-tailed (-tāld′) or rat·tailed (-tāld′)
Shaped like or having a part shaped like a rat's tail: a rat-tail file; a rattail comb.