(bridge) a playing card with a value sufficiently high to insure taking a trick in a particular suit; "if my partner has a spade stopper I can bid no trump"
close or secure with or as if with a stopper; "She stoppered the wine bottle"; "The mothers stoppered their babies' mouths with pacifiers"
shut out from view or get in the way so as to hide from sight; "The thick curtain blocked the action on the stage"; "The trees obstruct my view of the mountains"
hinder or prevent the progress or accomplishment of; "His brother blocked him at every turn"
concerned with systematic structure in a particular field of study
affecting or involved in structure or construction; "the structural details of a house such as beams and joists and rafters; not ornamental elements"; "structural damage"
relating to or having or characterized by structure; "structural engineer"; "structural errors"; "structural simplicity"
relating to or caused by structure, especially political or economic structure; "structural unemployment in a technological society"