rebar

Noun

rebar (countable and uncountable, plural rebars)

1. (countable) A steel reinforcing bar in a reinforced concrete structure.
   • The floor and walls for Copthall tunnel have already been constructed using formwork into which rebar (reinforcing bar) was placed, and then concrete poured.2023 August 23, Chris Howe, “Green screen: HS2's route through the shires”, in RAIL, number 990, page 35
2. (uncountable) A grid-shaped system of such bars.
   • The hash mark of rebar or the curve of a hubcap will create curious shapes to be decoded; even, perhaps, entire subway trains and lengths of tracks will remain.2020, David Farrier, “Thin Cities”, in Footprints, 4th Estate, →ISBN

Verb (1)

rebar (third-person singular simple present rebars, present participle rebarring, simple past and past participle rebarred)

1. (transitive) To reinforce with bars of this kind.

Verb (2)

UK/ɹiːˈbɑː(ɹ)/

rebar (third-person singular simple present rebars, present participle rebarring, simple past and past participle rebarred)

1. (transitive) To bar again.
   • After allowing the stranger to enter, she rebarred the door.
2. (transitive) To redistribute the notes of a musical score across the bars, e.g. when changing time signature.