名詞 canvass:

1. the setting for a narrative or fictional or dramatic account
   同義詞：canvas
2. an inquiry into public opinion conducted by interviewing a random sample of people
   同義詞：poll, opinion poll, public opinion poll
3. a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel
   同義詞：sail, canvas, sheet
4. a tent made of canvas fabric
   同義詞：canvas tent, canvas
5. an oil painting on canvas fabric
   同義詞：canvas
6. the mat that forms the floor of the ring in which boxers or professional wrestlers compete
   同義詞：canvas
7. a heavy, closely woven fabric (used for clothing or chairs or sails or tents)
   同義詞：canvas, canvas fabric, canvass fabric

動詞 canvass:

1. get the opinions (of people) by asking specific questions
   同義詞：poll, canvas
2. solicit votes from potential voters in an electoral campaign
   同義詞：canvas
3. consider in detail and subject to an analysis in order to discover essential features or meaning
   同義詞：analyze, analyse, study, examine, canvas

動詞 canvas:

1. solicit votes from potential voters in an electoral campaign
   同義詞：canvas
2. get the opinions (of people) by asking specific questions
   同義詞：poll, canvas
3. cover with canvas
   同義詞：canvas
4. consider in detail and subject to an analysis in order to discover essential features or meaning
   同義詞：analyze, analyse, study, examine, canvas

1. He thanked all his helpers who canvassed for him and helped him to win this election.
   他感謝所有為他競選游說，并且?guī)退A得這次競選勝利的人們。
2. He canvassed for a seat in Parliament.
   他為競選國會議員席位進行游說。

can.vass

v.（動詞）
can.vassed,can.vass.ing,can.vass.es
v.tr.（及物動詞）
To examine carefully or discuss thoroughly; scrutinize:
仔細檢查：仔細檢查或詳盡地討論；審查：
例句：
.The evidence had been repeatedly canvassed in American courts.(Anthony Lewis)
.證據(jù)已在美國的法庭中反復(fù)被審查過.(安東尼·劉易斯)

To go through (a region) or go to (persons) to solicit votes or orders.
游說：去（一個地區(qū)）的各處或找到（個人）來拉選票或定單
To conduct a survey of (public opinion); poll.
民意調(diào)查：進行一項（民意）調(diào)查；投票
v.intr.（不及物動詞）
To make a thorough examination or conduct a detailed discussion.
詳細討論：進行詳盡的檢查或舉行詳細的討論
To solicit voters, orders, or opinions.
爭取獲得選票的定單或意見
n.（名詞）
An examination or discussion.
檢查或討論
A solicitation of votes or orders.
拉選票，拉定單
A survey of public opinion.
民意調(diào)查

來源：
From obsolete canvass [to toss in a canvas sheet as punishment]
源自 廢語 canvass [在一張帆布里簸來簸去以示懲罰]
from canvas
源自 canvas

【引伸】
can.vasser
n.（名詞）