Valmiki Ramayana Yuddha Kanda Sarga 3 Shloka 13
Original Shlokaद्वारेषुसंस्कृताभीमाःकालायसमयाश्शिताः । शतशोरचितावीरैश्शतघ्नयोरक्षसांगणै ।।6.3.13।।
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संस्कृताः made ready, भीमाः terrific, कालयसमयाः fearful rakshasas ,श्शिताः sharpened, शतशः one hundred, शतघ्नयः huge stones studded with iron spikes , रक्षसाम्: guards, गणैः troops, द्वारेषु: at the entrance, रचिताः kept ready
At the entrances are troops of terrific looking guards kept ready with a hundred sharpened stones studded with iron spikes.