Describing an experiment (usually medical) in which some information which might influence the trial is withheld from particular participants until the experiment is complete. Most commonly, information about treatment groups is withheld from subjects, but not the administrators.

Describing an experiment (usually medical) in which some information which might influence the experiment is withheld from three different parties until the outcome of the experiment is known: most commonly, the three parties are the subjects, the administrators, and the statisticians analysing the data.

Alternative spelling of sandblind

plural of orange blister beetle

(Cockney rhyming slang) piss

(urban studies) Urban decay consisting of the deterioration of part of a town or city due to ageing, neglect, and lack of financial support for maintenance.

(Britain) Alternative form of blimey O'Riley

(Britain) An expression of surprise or frustration.

Even someone with limited abilities or opportunities is dominant over, and considered special by, those who have even fewer abilities and opportunities; the value of any ability depends on its prevalence.

Sight-impaired by the equine eye-disease moon blindness. / Sight-impaired by night blindness.