(US, law enforcement, politics) Synonym of police lives matter

(Internet slang, sometimes derogatory) Synonym of blue check.

plural of blue check mark

A small, blue gossamer-winged with brown border butterfly with cryptic, dull under wing, Lampedes boeticus, of the family Lycaenidae.

plural of blue-breasted fairywren

A species of fairywren, Malurus pulcherrimus, of southern central and western Australia.

plural of blue pigeon flyer

(UK, slang, obsolete) One who steals lead from the roof or other parts of a building.

(UK, slang, obsolete) To steal lead from the roof or other parts of a building.

plural of deep blue sea