Word #285 00100011100
castle — BIP39 word #285
"castle" is word #285 of the 2048 words in the official BIP39 English wordlist, between casino and casual.
In a seed phrase it stands for the 11-bit value
00100011100,
decimal index 284.
/ˈkɑːsᵊl/ · noun: a large fortified building with thick walls and towers
Russian: замок
Binary Representation
Four 1-bits and seven 0-bits; 330 of the 2048 indexes have exactly four 1-bits.
One wrong bit turns it into (leftmost bit first):
Position
#285 of 2048
Hex Index
0x11C
4-Letter Prefix
cast
About "castle" in BIP39
- "castle" has 6 letters, but the first four, "cast", already identify it, because "cas" also begins case, cash, casino and casual.
- "cast" is unique only within the English list: it also begins castor in the Spanish list, castello in the Italian list and castelo in the Portuguese list, so a four-letter backup should say which list it uses.