to hide something; keep information secret

hide, disguise

of hide

conceal; remain unseen

a hidden place where wild animals, birds etc may be observed, e.g. by photographers; (an) animal's skin

conceal; remain unseen

to produce (a liquid) by secretion

hide

to put an end to the activity or existence of (a revolt etc); to prevent (something) from being known or seen

restrain, hold in check

to keep back, refuse to give, information, permission etc

keep back