to conceal; to hide behind; to cover up

to cover up; to conceal; to mask; to gloss over

bunker (military)

to bury

to cover; to mask; to cover up or conceal (the truth etc)

hidden; covered; concealed

to cover up; to conceal; to close (a door, book etc); (coll.) to get (one's fingers etc) caught when closing a door or lid; (literary) to launch a surprise attack

to be secretive; to try to cover up (idiom)

to fool people (idiom); to pull the wool over people's eyes

(literary) to close the book (after a reading session)

hidden from view; alternately hidden and visible; setting off each other

to make a surprise attack; to pounce on (an enemy)

(computing) mask

to refuse to listen

shelter; screen; cover; protection

to partially obscure; (of a door, gate or window) slightly open; ajar; not fully shut; unlocked; (of a jacket or shirt) unbuttoned

backward masking

illusion

undisguised

to cover up the truth on all sides (idiom)

lit. to cover one's ears whilst stealing a bell; to deceive oneself; to bury one's head in the sand (idiom)

to bury one's head in one's hands and weep (idiom)

lit. a blemish does not obscure jade's luster; the pros outweigh the cons (idiom)

counter soldiers with arms, water with an earth weir (idiom); different situations call for different action; to adopt measures appropriate to the actual situation