Noun
longword (plural longwords)
(computing) A type of unsigned integer variable that is longer than a word (specific number of bits depends upon architecture)
Data types In the Alpha architecture, a byte was defined as an 8-bit datum (octet), a word as a 16-bit datum, a longword as a 32-bit datum, a quadword as a 64-bit datum, and an octaword as a 128-bit datum. Source: Internet
The new address is computed by longword aligning and sign extending the 21-bit displacement and adding it to the address of the instruction following the conditional branch. Source: Internet