do they practice meditation?
Yes, they do.
Meditation
Jainism considers meditation ("dhyana") a necessary practice, but its goals are very different from those in Buddhism and Hinduism. In Jainism, meditation is concerned more with stopping karmic attachments and activity, not as a means to transformational insights or self-realization in other Indian religions.
which of the following is not among the practices of jainism Violence, attachment, sensual pleasures, lie and possessiveness are some of them. and which are the practices? Jains take five main vows: “ahiṃsā”, “satya”, “asteya”, “brahmacharya” and “aparigraha". when did jainism begin? Historians date it to 8th or 7th century BCE. who is the leader? Rishabhanatha what are the beliefs? It is transtheistic and forecasts that the universe evolves without violating the law of substance dualism, auto executed through the middle ground between the principles of parallelism and interactionism. do jains fast? They fast particularly during festivals and it is  practiced according to one's ability. what food do they eat? The practice of non-violence towards all living beings has led to them to follow vegetarian diet. and what are they not allowed to eat? Eggs, root vegetables such as potatoes, onions, and garlic are some of the food avoided. which symbols are used by them? "Swastika", "Om" and "Ashtamangala". which symbols are used by them? "Swastika", "Om" and "Ashtamangala". do they have any pilgrimages? Yes, they do. "Nagarparkar" located at Pakistan  is one of them.
Yes, They consider meditation ("dhyana") a necessary practice. Yes, it is considered as a necessary practice. Yes, Jainism considers meditation ("dhyana") a necessary practice.
Jainism Jainism Jainism
Meditation Meditation Meditation
Jainism considers meditation ("dhyana") a necessary practice, but its goals are very different from those in Buddhism and Hinduism. Jainism considers meditation ("dhyana") a necessary practice, but its goals are very different from those in Buddhism and Hinduism. In Jainism, meditation is concerned more with stopping karmic attachments and activity, not as a means to transformational insights or self-realization in other Indian religions. According to Padmanabh Jaini, "Sāmāyika" is a practice of "brief periods in meditation" in Jainism that is a part of "siksavrata" (ritual restraint). The goal of "Sāmāyika" is to achieve equanimity, and it is the second "siksavrata". The "samayika" ritual is practiced at least three times a day by mendicants, while a layperson includes it with other ritual practices such as "Puja" in a Jain temple and doing charity work. According to Johnson, as well as Jaini, "samayika" connotes more than meditation, and for a Jain householder is the voluntary ritual practice of "assuming temporary ascetic status". Jainism considers meditation ("dhyana") a necessary practice, but its goals are very different from those in Buddhism and Hinduism. 
wiki:7671788
Jainism [SEP] Meditation
Jainism considers meditation ("dhyana") a necessary practice, but its goals are very different from those in Buddhism and Hinduism. In Jainism, meditation is concerned more with stopping karmic attachments and activity, not as a means to transformational insights or self-realization in other Indian religions. According to Padmanabh Jaini, "Sāmāyika" is a practice of "brief periods in meditation" in Jainism that is a part of "siksavrata" (ritual restraint). The goal of "Sāmāyika" is to achieve equanimity, and it is the second "siksavrata". The "samayika" ritual is practiced at least three times a day by mendicants, while a layperson includes it with other ritual practices such as "Puja" in a Jain temple and doing charity work.