--- title: "BIP39 Word #258: cage — Seed Phrase Mnemonic Word" url: "https://bip39-phrase.com/bip39-word/cage/" language: "en" updated: "2026-10-19T00:00:00+00:00" --- Word #258 00100000001 # cage — BIP39 word #258 "**cage**" is word #258 of the 2048 words in the official BIP39 English wordlist, between [cactus](/bip39-word/cactus/) and [cake](/bip39-word/cake/). In a seed phrase it stands for the 11-bit value `00100000001`, decimal index 257\. /keɪʤ/ · _noun:_ a structure of bars or wire used to hold animals or birds [Russian](/ru/ "The BIP39 wordlist with Russian translations"): клетка ## Binary Representation Two 1-bits and nine 0-bits; 55 of the 2048 indexes have exactly two 1-bits. One wrong bit turns it into (leftmost bit first): [parent](/bip39-word/parent/)[gasp](/bip39-word/gasp/)[ability](/bip39-word/ability/)[coral](/bip39-word/coral/)[choice](/bip39-word/choice/)[category](/bip39-word/category/)[captain](/bip39-word/captain/)[cancel](/bip39-word/cancel/)[camera](/bip39-word/camera/)[call](/bip39-word/call/)[cactus](/bip39-word/cactus/) Position Hex Index 0x101 4-Letter Prefix cage ## About "cage" in BIP39 - "cage" has 4 letters, but the first three, **"cag"**, already identify it, because **"ca"** also begins 41 other words, among them [cabbage](/bip39-word/cabbage/), [cabin](/bip39-word/cabin/), [cable](/bip39-word/cable/) and [cactus](/bip39-word/cactus/). Three letters are enough for only 604 of the 2048 words. - "cage" appears in three of the 24 official English [test vectors](https://github.com/trezor/python-mnemonic/blob/master/vectors.json) of BIP39: vectors #3 (words 3 and 11 of 12), #7 (words 3 and 11 of 18) and #11 (words 3, 11 and 19 of 24). Every official vector passes the [checksum checker](/bip39-checksum-checker/), and [How BIP39 works](/how-bip39-works/) shows how the entropy turns into such words. Official test vector #3 [letter](/bip39-word/letter/) [advice](/bip39-word/advice/) cage [absurd](/bip39-word/absurd/) [amount](/bip39-word/amount/) [doctor](/bip39-word/doctor/) [acoustic](/bip39-word/acoustic/) [avoid](/bip39-word/avoid/) [letter](/bip39-word/letter/) [advice](/bip39-word/advice/) cage [above](/bip39-word/above/) ## Word #258 in the Other 9 BIP39 Wordlists [Czech](/czech/) doma [French](/french/) bolide [Italian](/italian/) bravura [Japanese](/japanese/) おおう [Korean](/korean/) 기법 [Portuguese](/portuguese/) barulho [Spanish](/spanish/) bolero [Traditional Chinese](/chinese-traditional/) 據 [Simplified Chinese](/chinese-simplified/) 据 ## Similar Words — Check Carefully During Recovery 6 BIP39 words differ from "cage" by just a single letter — the most common source of typos when a seed phrase is entered by hand: [age](/bip39-word/age/)[cake](/bip39-word/cake/)[case](/bip39-word/case/)[cave](/bip39-word/cave/)[page](/bip39-word/page/)[wage](/bip39-word/wage/) Read aloud, "cage" /keɪʤ/ is one sound away from this word: [gauge /ɡeɪʤ/](/bip39-word/gauge/) ## More BIP39 Words Starting with "C" [ #254 cabbage ](/bip39-word/cabbage/)[ #255 cabin ](/bip39-word/cabin/)[ #256 cable ](/bip39-word/cable/)[ #257 cactus ](/bip39-word/cactus/)[ #259 cake ](/bip39-word/cake/)[ #260 call ](/bip39-word/call/)[ #261 calm ](/bip39-word/calm/)[ #262 camera ](/bip39-word/camera/) [View all words starting with "C" ](/bip39-words/c/) ## Seed phrase, key and recovery guides - [Invalid Seed Phrase? How to Find and Fix a Wrong Word (BIP39)](/how-to-fix-seed-phrase-errors/) - [Ethereum Keystore File (JSON Wallet): Structure and Security](/json-wallets-explained/) - [What Is BIP39? The Standard Behind Seed Phrases](/bip39-the-foundation-of-crypto-wallet-security/) [ Full BIP39 Wordlist ](/)