abb
/ab/(also hab, obb) Weaving. Now historical and rare
noun
Originally: the woof or weft in a web. Later also: the warp in a web. Frequently attributive, as abb thread, abb wool, etc.
Origin
Old English; earliest use found in Cleopatra Glossary. Apparently from Old English ō-, prefix + web; compare the parallel formation represented by Old English ōwef.