back (redirected from known like the back of hand)

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.