Meaning of お負け in Japanese

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Definition of お負け

おまけ(omake) 【お負け ·御負け】

(n, vs) freebie (e.g. with a purchase); something additional; bonus; an extra
この商品にはおまけが付く。
This article comes with a free gift.
(on the spot) price reduction
exaggeration

おまけに(omakeni) 【御負けに ·お負けに】

(conj, exp) to make matters worse; besides; what's more; in addition; on top of that
おまけに雨まで降っていた。
It was raining into the bargain.