Used other than figuratively or idiomatically: see climb, down.
To abandon, withdraw from, or soften a previously expressed opinion, argument, etc.
An abandonment, withdrawal from, or softening of a previously expressed opinion, policy, argument, etc.
To start, begin.
To cause to go on board a vessel or boat; to put on shipboard.
To get on a boat or ship or (outside the USA) an aeroplane.
To engage, enlist, or invest (as persons, money, etc.) in any affair.