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Wiktionary
run up

n. (context cricket English) the action of running up; the area of the pitch used by the bowler to run up, the start of which he marks with a small marker vb. 1 (context cricket English) of a bowler, to run, or walk up to the bowling crease in order to bowl a ball. 2 (context idiomatic English) To bring a flag to the top of its flag pole. 3 (context idiomatic English) To make something, usually an item of clothing, very quickly. 4 (context idiomatic English) To accumulate a debt. 5 To rise; to swell; to grow; to increase. 6 To thrust up, as anything long and slender. 7 To erect hastily, as a building.

WordNet
run up
  1. v. as of debts or scores

  2. raise; "hoist the flags"; "hoist a sail" [syn: hoist]

  3. fasten by sewing; do needlework [syn: sew, sew together, stitch]

  4. accumulate as a debt; "he chalked up $100 in the course of the evening" [syn: chalk up]

  5. make by sewing together quickly; "run up a skirt"

Usage examples of "run up".

Inland Alaskans load up on the salmon that run up the rivers to spawn.