(noun) a punishment a student standing outside a classroom and is not allowed to learn
Definitions (粵典–words.hk)
動詞
中小學盛行嘅懲罰方式，老師會要求犯錯嘅學生企喺課室入面或者出面，反省自己嘅行為 to be ordered to stand up straight for a period of time as a punishment
佢上堂唔留心俾先生罰佢企。
佢上堂唔留心俾先生罚佢企。
keoi5 soeng5 tong4 m4 lau4 sam1 bei2 sin1 saang1 fat6 keoi5 kei5. He was punished to stand still for being not attentive in class.
Definitions (Wiktionary)
verb, Cantonese
to punish someone by having them stand (syn.) 徛壁, 罰站, 企圈, 罰徛, 罰企
金钟地铁站好多警察，将年轻人㩒埋墙罚企，一字排开咁查身份证，查完又唔俾人走，摆喺到示众。
金钟地铁站好多警察，将年轻人㩒埋墙罚企，一字排开咁查身份证，查完又唔俾人走，摆喺到示众。
gam1 zung1 dei6 tit3 zaam6 hou2 do1 ging2 caat3, zoeng1 nin4 hing1 jan4 gam6 maai4 coeng4 fat6 kei5, jat1 zi6 paai4 hoi1 gam2 caa4 san1 fan6 zing3, caa4 jyun4 jau6 m4 bei2 jan4 zau2, baai2 hai2 dou6 si6 zung3. There are police at Admiralty rail station having youths stand to the wall in single file and checking their ID, but not letting them leave afterwards, displaying them before the people.