Hourglass

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Referring to a cylindrical or elongated structure with a central constriction likened, sometimes in only a very general sense, to an hourglass
References in periodicals archive ?
The Big Taboo contains: 252 cards, three pawns, Bendy Bob plush character, game board, sand timer, sketch pad and pencil.
Electronic Sand Timer & Clock, pounds 12 (approx), Salter (01732 354 828) Old meets new with this hourglass shaped timer.
There are some items that I never leave home without: a visual clock, sand timer, coloring books or small quiet toys, white board and marker or paper to write messages to your child (talk less, show what you mean with pictures/words).
The game comes with 400 all-new cards, 16 activities, six Cranium cubes, four flipper frogs, two mover pieces, pad and pencil, sand timer, and die, and takes about 40 minutes to play.