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▪ I. underˈlap, v.
[under-1 4 a.]
To extend some way beneath. Hence underˈlapping ppl. a.
1867Duke of Argyll Reign of Law iii. 141 The feathers of a bird's wing are made to underlap each other. c1900Buck's Handbk. Med. Sci. IV. 680 (Cent. Suppl.), The margin of the underlapping side is sutured to the deep surface of the overlapping side.
▪ II. ˈunderlap, n.
[under-1 5 b, after overlap.]
†1. Geol. The fact or state of underlapping. Obs. rare—1.
1883J. G. Goodchild in Geol. Mag. Decade II. X. 226 Overlap, and its correlative Underlap, as it is here suggested to employ them, thus denote the stratigraphical relations of one part of a formation to another where the original extent of the lower part occupied a smaller area than that of the next higher members of the same series.
2. a. In warp knitting, the lateral movements of the guide bar made on the side of the needle remote from the hook.
1926J. Chamberlain Hosiery Yarns & Fabrics vii. 170 The underlap may be at the back of any convenient number of needles. 1952D. F. Paling Warp Knitting Technol. i. 4 The first movement is applied to the guide bars, and consists of a lateral motion in front of the needles..known as the underlap. 1971D. G. B. Thomas Introd. to Warp Knitting iii. 24 In most modern machines, the underlap takes place when the needles are down. The underlap is sometimes called a shog.
b. A piece of material that extends beneath another fold or pleat.
1943I. R. Duncan Needles & Pins xiv. 284 Stitch the two pieces together at the top and bottom for a dress..to form an over and under lap for the placket. 1964McCall's Sewing ii. 33/1 Underlap, a part of a garment that extends or laps under another pleat. 1979Tucson (Arizona) Citizen 20 Sept. 2b/1 Put the coat on over a skirt or dress and button it closed. Place a pin at the desired new hem length at center front on both the over⁓lap and underlap. |