what's this in aid of?

what's this in aid of? BrE spokenused to ask what something is used for or why someone is doing something这有什么用途？ 这样做是什么用意？:•What's this meeting tomorrow in aid of, then?那么，明天的这个会议是为了什么？

• Suffolker
• self-regulations
• give a handle to
• aurora
• conservatories
• public companies
• Yellow Cross Liquid
• never / don't look a gift horse in the mouth
• Hughes press
• fugging
• barometric depression
• chicaneries
• a shot in the arm
• floodmarks
• make something over
• preceding spot
• hurtfulnesses
• Minitel
• ahds
• mantellettas
• Vela X-z
• nickers
• kornerupine
• electrophoretics
• disheartens
• adhesiotomies
• blood pumps
• plungest
• accessibilities
• terminal elevator
• prick off/out
• consiliences
• psychographics
• lie at sb’s door
• paddle hole
• incogitancies
• Secretary of States
• salat
• starvations
• T.M.
• ruddling
• hiatus hernias
• melioidosis
• stallions
• winterless
• sentimentalisations
• session musician
• born in lawful wedlock
• tubero-hypophyseal
• weiss beers
• pyritic
• get done with
• Raymond concrete pile
• driven element
• open weave
• a frog in one's throat
• drilling cramp
• crochetwork
• displease about
• treat someone as mud
• hold someone up to ridicule
• hideless
• pug noses
• paunches
• doubleface
• cool out
• Shrove Sundays
• grey whales
• Trakehners
• acidies
• homeochromatic
• all is well with
• notanda
• lose the battle (或day,field)
• lysosomally
• mammoplasia
• circuit court
• triennia
• incandescently
• importunes
• superovulate
• adventuresomeness
• doomsaying
• favourable
• in every quarter
• torrential rain
• kicky
• cameleers
• skivers
• horizontal centering control
• grieves
• differential erosion
• toadfish
• trottiest
• selaginella
• oligochaetes
• Nicaragua
• circle of convergence
• Bapt
• re-leased