A plate of pale, rubbery stomach on a cheap table. It is the part of the animal that other people leave behind, it needs hours of cooking, and it splits a room: some eat it happily, others push the plate away. Both meanings of the word live on that plate.
The source traces the word through Middle English tripe from Old French tripe, 'entrails', with an uncertain earlier history and a possible link to Spanish tripa. So the oldest sense names what is inside the animal, and the edible stomach is one step from that.
來源資料說這個字經由中古英文 tripe，來自古法文 tripe（內臟），更早的來源不確定，可能跟西班牙文 tripa 有關。也就是說，它最早指的就是動物肚子裡的東西，走到「可以吃的胃」只有一步。
Wiktionary etymology supplied in this packet: "From Middle English tripe, from Old French tripe (entrails), of uncertain origin; possibly borrowed from Spanish tripa." (source_ref kaikki:3f6f69a190036ae4:671195636)
From the picture
罵人的話：沒價值的東西
同一盤便宜的內臟，換個場合用。把別人的話或一部電影叫做 tripe，就是把它擺到那個位置：不值錢、不想碰。
noun · C1
Something said, written or made that you think is silly and not true, and has no value at all. It is informal, and the source marks it as especially British English.
胡說八道；爛東西
noun · B2
The stomach of a cow or a pig, cleaned and cooked as food. It is an uncountable noun, so you say some tripe or a plate of tripe, never a tripe.
牛肚；豬肚