Ns'+N: ladies’ man ‘one who makes special effort to charm or please women’.
N+prp+N: the arm of the law; skeleton in the cupboard.
N+A:knight errant (the phrase is today applied to any chivalrous man ready to help and protect oppressed and helpless people).
N+and+N: lord and master ‘husband’; all the world and his
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wife (a more complicated form); rank and file ‘the ordinary working members of an organisation’ (the origin of this expression is military life, it denotes common soldiers); ways and means ‘methods of overcoming difficulties’.
A+N: green room ‘the general reception room of a theatre’ (it is said that formerly such rooms had their walls coloured green to relieve the strain on the actors’ eyes after the stage lights); high tea ‘an evening meal which combines meat or some similar extra dish with the usual tea’; forty winks ‘a short nap’.
N+subordinate clause: ships that pass in the night ‘chance acquaintances’.