bead and quirk
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bead and quirk[¦bēd ən ′kwərk]
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
quirk bead, bead and quirk, quirked bead
1. A bead with a quirk on one side only, as on the edge of a board.
2. A recessed or double-quirked bead, where the bead is flush with the
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.