Strip That Seals a Gap Between Double Doors

This page is the CodyCross answer for the clue below from Canada, Group 1269, Puzzle 2 (Rocky Mountains).

Question is: Strip That Seals a Gap Between Double Doors

and the answer is: ASTRAGAL

Word Meaning:

ASTRAGAL — (anatomy) Synonym of anklebone: the bone forming the ball of the ankle joint.

Definitions from Wiktionary.