A person who plays golf, using a Scottish or dialectal form of 'golfer'.
From 'gowf' (Scottish form of 'golf') plus the agent suffix '-er' (one who does an action). A dialectal variant of 'golfer'.
Agent nouns with '-er' are English's default way to name people by what they do—'gowfer' shows that pattern working in Scottish English just like 'golfer' does in Modern English.
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