back (redirected from backs in the day)

Back, river, c.600 mi (970 km) long, rising in lakes, Northwest Territories, Canada, and flowing northeast through Nunavut across the tundra to Chantry Inlet. Numerous lakes lie along its course. It is named for Sir George Back, the first European to descend the river (1834).

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back¹

1. Ball games

a. a mainly defensive player behind a forward

b. the position of such a player

2. the upper surface of a joist, rafter, slate, tile, etc., when in position

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back²

a large tub or vat, esp one used by brewers

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back [bak]

(anatomy)

The part of the human body extending from the neck to the base of the spine.

(graphic arts)

The part of a book where the binding and pages are stitched together.

(mining engineering)

The upper part of any mining cavity.

A joint, usually a strike joint, perpendicular to the direction of working.

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back

1. The rear, reverse, unseen, more remote, or less important part of a structure, tool, or object

2. The support for a more prominent or visible element; e.g., the back of wallboard is the surface to be plastered.

3. The top or exposed side of a slate, tile, or the like, in contrast to the bed.

4. The ridge or top of a horizontal member or structure like a joist, rafter, or roof.

5. A principal rafter.

6. The extrados or top surface of an arch, often buried in the surrounding masonry.

7. A low-grade veneer used for the back ply in plywood construction.

8. The wainscoting below the sash frame of a window, extending to the floor.