Real Dictionary

pall
If something palls, it becomes less interesting or less enjoyable after a period of time.
countable noun: If a pall of smoke hangs over a place, there is a thick cloud of smoke above it.

pall in American English 1
to become cloying, insipid, boring, wearisome, etc.
to satiate, bore, or disgust
noun: a cloth, often of velvet, for spreading over a coffin, bier, or tomb
transitive verb: to cover with or as with a pall

pall in American English 2
a cloth covering, typically black, draped over a coffin or catafalque
intransitive verb: to have a wearying or tiresome effect
transitive verb: to satiate or cloy

pall in British English 1
noun: a cloth covering, usually black, spread over a coffin or tomb

pall in British English 2
verb: to become or appear boring, insipid, or tiresome (to)