back and fill
Proposed by a contributor, not yet supported by evidence.
Meaning · English
to maneuver or change direction repeatedly
Literally: sailing tactic of adjusting sails to navigate through tight spaces
Where it’s used:
Used
Widespread English
Sources & notes
Listed on Wikipedia “Irreversible binomial” (CC BY-SA 4.0, retrieved 2026-07-29). Definition drafted by AI (@cf/meta/llama-3.3-70b-instruct-fp8-fast) and auto-approved by rule on 2026-07-30; pending editor spot-check.
Common questions
What does “back and fill” mean?
to maneuver or change direction repeatedly Literally: sailing tactic of adjusting sails to navigate through tight spaces
Is “back and fill” formal or informal?
No register label has been reviewed yet — treat it as neutral and check the usage notes above.