From Traderpedia

Definition: A price bar following a series of higher highs or lower lows that is proceeded by a bar that fails to make a new high in an uptrend/new low in a downtrend.

A Ross Hook is a term created by Joe Ross in The Law of Charts.

A Ross Hook is created by:

1. The first correction following the breakout of a 1-2-3 high or low.
2. The first correction following the breakout of a Ledge.
3. The first correction following the breakout of a Trading Range.

In an up-trending market, after the breakout of a 1-2-3 low, the first instance of the failure of a price bar to make a new high creates a Ross Hook. (A double high/double top also creates a Ross Hook).

In a down-trending market, after the breakout of a 1-2-3 high, the first instance of the failure of a price bar to make a new low creates a Ross Hook. (A double low/double bottom also equals a Ross Hook).

If prices breakout to the upside of a Ledge or a Trading Range formation, the first instance of the failure by a price bar to make a new high creates a Ross Hook. If prices breakout to the downside of a Ledge or Trading Range formation, the first instance of the failure by a price bar to make a new low creates a Ross Hook (A double high or low also creates a Ross Hook).

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