名詞 gaffer:

1. an elderly man
   同義詞：old-timer, oldtimer, old geezer, antique
2. an electrician responsible for lighting on a movie or tv set
3. a person who exercises control over workers
   同義詞：foreman, chief, honcho, boss

1. That (old) gaffer going into the pub is 90 years old.
   走進(jìn)酒店的那個(gè)老頭子已經(jīng)90歲了。

gaf.fer

n.（名詞）
An electrician in charge of lighting on a movie or television set.
照明電工：電影或電視拍攝小組負(fù)責(zé)照明的電工
Chiefly British An old man or a rustic.
【多用于英國】 老頭兒或鄉(xiāng)下人
Chiefly British A boss or foreman.
【多用于英國】 雇主，工頭

來源：
Probably alteration influenced by grandfather
可能為 受 grandfather的影響
of godfather
godfather的變化