Block v. t. [imp. & p. p. Blocked p. pr. & vb. n. Blocking.]
 1. To obstruct so as to prevent passage or progress; to prevent passage from, through, or into, by obstructing the way; -- used both of persons and things; -- often followed by up; as, to block up a road or harbor; to block an entrance.
    With moles . . . would block the port.   --Rowe.
    A city . . . besieged and blocked about.   --Milton.
 2. To secure or support by means of blocks; to secure, as two boards at their angles of intersection, by pieces of wood glued to each.
 3. To shape on, or stamp with, a block; as, to block a hat.
 To block out, to begin to reduce to shape; to mark out roughly; to lay out; to outline; as, to block out a plan.

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